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Issue 706865 link

Starred by 3 users

Issue metadata

Status: Fixed
Owner:
Closed: May 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: Android
Pri: 3
Type: Bug

Blocked on:
issue 372245

Blocking:
issue 704763



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Crash during system_health.common_mobile browse:media:youtube on Nexus5 Perf bot

Project Member Reported by mikec...@chromium.org, Mar 30 2017

Issue description

Going to attempt bisecting crash. Link to crash is here...

https://luci-logdog.appspot.com/v/?s=chrome%2Fbb%2Fchromium.perf%2FAndroid_Nexus5_Perf__2_%2F5327%2F%2B%2Frecipes%2Fsteps%2Fsymbolized_breakpad_crashes%2F0%2Fstdout

...but for some reason stackwalker tool seems to be unable to usefully symbolize.


 
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Mar 30 2017

Cc: yosin@chromium.org
Owner: yosin@chromium.org

=== Auto-CCing suspected CL author yosin@chromium.org ===

Hi yosin@chromium.org, the bisect results pointed to your CL, please take a look at the
results.


=== BISECT JOB RESULTS ===
Test failure found with culprit

Suspected Commit
  Author : yosin
  Commit : 9744d5bffb3fbdf761455b355ebc4faa757d1aaf
  Date   : Thu Mar 30 09:02:53 2017
  Subject: Get rid of computeVisibleSelectionInDOMTreeDeprecated() in InputMethodController::textInputType() and textInputInfo()

Bisect Details
  Configuration: android_nexus7_perf_bisect
  Benchmark    : system_health.common_mobile
  Metric       : BenchmarkDuration/BenchmarkDuration

Revision             Exit Code      N
chromium@460629      0 +- N/A       3      good
chromium@460683      0 +- N/A       3      good
chromium@460701      0 +- N/A       3      good
chromium@460704      0 +- N/A       3      good
chromium@460705      1 +- N/A       3      bad       <--
chromium@460706      1 +- N/A       3      bad
chromium@460710      1 +- N/A       3      bad
chromium@460719      1 +- N/A       3      bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=android-chromium --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=browse:media:youtube system_health.common_mobile

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8983677610029167536

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5344145624793088


| O O | Visit http://www.chromium.org/developers/speed-infra/perf-bug-faq
|  X  | for more information addressing perf regression bugs. For feedback,
| / \ | file a bug with component Speed>Bisection.  Thank you!
Project Member

Comment 4 by 42576172...@developer.gserviceaccount.com, Mar 30 2017


=== BISECT JOB RESULTS ===
Test failure found with culprit

Suspected Commit
  Author : yosin
  Commit : 9744d5bffb3fbdf761455b355ebc4faa757d1aaf
  Date   : Thu Mar 30 09:02:53 2017
  Subject: Get rid of computeVisibleSelectionInDOMTreeDeprecated() in InputMethodController::textInputType() and textInputInfo()

Bisect Details
  Configuration: android_nexus5_perf_bisect
  Benchmark    : system_health.common_mobile
  Metric       : BenchmarkDuration/BenchmarkDuration

Revision             Exit Code      N
chromium@460685      0 +- N/A       3      good
chromium@460701      0 +- N/A       3      good
chromium@460704      0 +- N/A       3      good
chromium@460705      1 +- N/A       3      bad       <--
chromium@460706      1 +- N/A       3      bad
chromium@460710      1 +- N/A       3      bad
chromium@460716      1 +- N/A       3      bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=android-chromium --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=browse:media:youtube system_health.common_mobile

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8983678108661047952

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5689139946586112


| O O | Visit http://www.chromium.org/developers/speed-infra/perf-bug-faq
|  X  | for more information addressing perf regression bugs. For feedback,
| / \ | file a bug with component Speed>Bisection.  Thank you!
Project Member

Comment 5 by bugdroid1@chromium.org, Mar 30 2017

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/dc19a899c0f97dcd259a3ec506396c43db14ef23

commit dc19a899c0f97dcd259a3ec506396c43db14ef23
Author: sullivan <sullivan@chromium.org>
Date: Thu Mar 30 22:09:15 2017

Revert of Get rid of computeVisibleSelectionInDOMTreeDeprecated() in InputMethodController (patchset #4 id:60001 of https://codereview.chromium.org/2782413002/ )

Reason for revert:
This causes a crash in a telemetry benchmark on android. To reproduce, run:

src/tools/perf/run_benchmark -v --browser=android-chromium --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=browse:media:youtube system_health.common_mobile

BUG= 706865 

Original issue's description:
> Get rid of computeVisibleSelectionInDOMTreeDeprecated() in InputMethodController::textInputType() and textInputInfo()
>
> This patch gets rid of |computeVisibleSelectionInDOMTreeDeprecated()| by replacing
> it with |rootEditableElementOf()| with non-canonicalize position from
> |textInputInfo()| and |textInputType()| of |InputMethodController| for improving
> code health.
>
> Node: Because of selection can't cross editing boundary, root editable element for
> non-canonicalized position and canonicalized position are same.
>
> This patch is intentionally not change all call sites of |rootEditableElement()|
> in |InputMethodController| to merge this patch as workaround of [1].
>
> [1]  http://crbug.com/704763  Opacity animation consuming main thread resources
>
> BUG=698633,  704763 
> TEST=n/a; no behavior changes
>
> Review-Url: https://codereview.chromium.org/2782413002
> Cr-Commit-Position: refs/heads/master@{#460705}
> Committed: https://chromium.googlesource.com/chromium/src/+/9744d5bffb3fbdf761455b355ebc4faa757d1aaf

TBR=tkent@chromium.org,xiaochengh@chromium.org,yoichio@chromium.org,yosin@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=698633,  704763 

Review-Url: https://codereview.chromium.org/2785333002
Cr-Commit-Position: refs/heads/master@{#460903}

[modify] https://crrev.com/dc19a899c0f97dcd259a3ec506396c43db14ef23/third_party/WebKit/Source/core/editing/InputMethodController.cpp

Cc: nednguyen@chromium.org perezju@chromium.org
 Issue 707005  has been merged into this issue.
Cc: sullivan@chromium.org mariakho...@chromium.org
 Issue 706836  has been merged into this issue.
Project Member

Comment 8 by 42576172...@developer.gserviceaccount.com, Mar 31 2017

 Issue 706836  has been merged into this issue.
 Issue 706857  has been merged into this issue.
Blocking: 704763
Status: Available (was: Untriaged)
The crash is caused by Doucment.cpp(1997) |CHECK(lifecycle().stateAllowsTreeMutations())| by
Element::clientHeight() with dirty layout tree.

We are painting dirty layout tree, or |Document::needsLayoutTreeUpdate()| returns true.

My patch [1] exposes invalid state rather than causes the crash.

The root cause is we are painting with dirty layout tree.

[1] http://crrev.com/2782413002 Get rid of computeVisibleSelectionInDOMTreeDeprecated() in InputMethodController

Full crash log:
https://docs.google.com/a/google.com/document/d/1CdI_DR6OS1jd_KSEsHUIUyVX6D5UqLrxC7gXvD6CpqU/edit?usp=sharing

Here is stack trace:
I   10.802s Main  signal 6 (SIGABRT), code -6 (SI_TKILL), fault addr --------
I   10.802s Main  [FATAL:Document.cpp(1997)] Check failed: lifecycle().stateAllowsTreeMutations(). 
I   10.803s Main  
I   10.803s Main  Stack Trace:
I   10.803s Main    RELADDR   FUNCTION                                                                                            FILE:LINE
I   10.803s Main    000a557d  ~LogMessage                                                                                         /usr/local/google/home/yoichio/src/chromeAndroid/src/base/logging.cc:537
I   10.803s Main    006a57f7  blink::Document::updateStyleAndLayoutTree()                                                         /usr/local/google/home/yoichio/src/chromeAndroid/src/third_party/WebKit/Source/core/dom/Document.cpp:1997
I   10.803s Main    006a8b5b  blink::Document::updateStyleAndLayoutTreeIgnorePendingStylesheets()                                 /usr/local/google/home/yoichio/src/chromeAndroid/src/third_party/WebKit/Source/core/dom/Document.cpp:2297
I   10.803s Main    v------>  blink::Document::updateStyleAndLayoutIgnorePendingStylesheets(blink::Document::RunPostLayoutTasks)  /usr/local/google/home/yoichio/src/chromeAndroid/src/third_party/WebKit/Source/core/dom/Document.cpp:2302
I   10.803s Main    006a88c7  blink::Document::updateStyleAndLayoutIgnorePendingStylesheetsForNode(blink::Node*)                  /usr/local/google/home/yoichio/src/chromeAndroid/src/third_party/WebKit/Source/core/dom/Document.cpp:2192
I   10.803s Main  
I   10.803s Main  -----------------------------------------------------
I   10.804s Main  
I   10.804s Main      r0 00000000  r1 00005a60  r2 00000006  r3 00000008
I   10.804s Main      r4 e464f978  r5 00000006  r6 e464f920  r7 0000010c
I   10.804s Main      r8 e464bf90  r9 e464bf90  sl e464c430  fp e464c990
I   10.804s Main      ip 00000002  sp e464bf28  lr ecf6f557  pc ecf71db4
I   10.804s Main  
I   10.804s Main  Stack Trace:
I   10.804s Main    RELADDR   FUNCTION                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FILE:LINE
I   10.804s Main    00049db4  tgkill+12                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     /system/lib/libc.so
I   10.804s Main    00047553  pthread_kill+34                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               /system/lib/libc.so
I   10.805s Main    0001d8a5  raise+10                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      /system/lib/libc.so
I   10.805s Main    000193f1  __libc_android_abort+34                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       /system/lib/libc.so
I   10.805s Main    00017034  abort+4                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       /system/lib/libc.so
I   10.805s Main    v------>  base::debug::(anonymous namespace)::DebugBreak()                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              /usr/local/google/home/yoichio/src/chromeAndroid/src/base/debug/debugger_posix.cc:221
I   10.805s Main    00091777  base::debug::BreakDebugger()                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  /usr/local/google/home/yoichio/src/chromeAndroid/src/base/debug/debugger_posix.cc:251
I   10.805s Main    000a5793  ~LogMessage                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   /usr/local/google/home/yoichio/src/chromeAndroid/src/base/logging.cc:759
I   10.805s Main    006a57f5  blink::Document::updateStyleAndLayoutTree()                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   /usr/local/google/home/yoichio/src/chromeAndroid/src/third_party/WebKit/Source/core/dom/Document.cpp:1997
I   10.805s Main    006a8b59  blink::Document::updateStyleAndLayoutTreeIgnorePendingStylesheets()                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           /usr/local/google/home/yoichio/src/chromeAndroid/src/third_party/WebKit/Source/core/dom/Document.cpp:2297
I   10.805s Main    v------>  blink::Document::updateStyleAndLayoutIgnorePendingStylesheets(blink::Document::RunPostLayoutTasks)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            /usr/local/google/home/yoichio/src/chromeAndroid/src/third_party/WebKit/Source/core/dom/Document.cpp:2302
I   10.805s Main    006a88c5  blink::Document::updateStyleAndLayoutIgnorePendingStylesheetsForNode(blink::Node*)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            /usr/local/google/home/yoichio/src/chromeAndroid/src/third_party/WebKit/Source/core/dom/Document.cpp:2192
I   10.806s Main    006d1117  blink::Element::clientHeight()                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                /usr/local/google/home/yoichio/src/chromeAndroid/src/third_party/WebKit/Source/core/dom/Element.cpp:771
I   10.806s Main    00c05857  blink::MediaControlsPainter::paintMediaOverlayPlayButton(blink::LayoutObject const&, blink::PaintInfo const&, blink::IntRect const&)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          /usr/local/google/home/yoichio/src/chromeAndroid/src/third_party/WebKit/Source/core/paint/MediaControlsPainter.cpp:196
I   10.806s Main    00bf53cf  blink::BoxPainter::paintBoxDecorationBackgroundWithRect(blink::PaintInfo const&, blink::LayoutPoint const&, blink::LayoutRect const&)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         /usr/local/google/home/yoichio/src/chromeAndroid/src/third_party/WebKit/Source/core/paint/BoxPainter.cpp:177
I   10.806s Main    00bf51ad  blink::BoxPainter::paintBoxDecorationBackground(blink::PaintInfo const&, blink::LayoutPoint const&)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           /usr/local/google/home/yoichio/src/chromeAndroid/src/third_party/WebKit/Source/core/paint/BoxPainter.cpp:87
I   10.806s Main    00a89999  blink::LayoutBox::paintBoxDecorationBackground(blink::PaintInfo const&, blink::LayoutPoint const&) const                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      /usr/local/google/home/yoichio/src/chromeAndroid/src/third_party/WebKit/Source/core/layout/LayoutBox.cpp:1494
I   10.806s Main    00bedbbb  blink::BlockPainter::paintObject(blink::PaintInfo const&, blink::LayoutPoint const&)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          /usr/local/google/home/yoichio/src/chromeAndroid/src/third_party/WebKit/Source/core/paint/BlockPainter.cpp:175
I   10.806s Main    00a6b137  blink::LayoutBlock::paintObject(blink::PaintInfo const&, blink::LayoutPoint const&) const                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     /usr/local/google/home/yoichio/src/chromeAndroid/src/third_party/WebKit/Source/core/layout/LayoutBlock.cpp:892
I   10.806s Main    00bed5d9  blink::BlockPainter::paint(blink::PaintInfo const&, blink::LayoutPoint const&)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                /usr/local/google/home/yoichio/src/chromeAndroid/src/third_party/WebKit/Source/core/paint/BlockPainter.cpp:53
I   10.806s Main    00a6b113  blink::LayoutBlock::paint(blink::PaintInfo const&, blink::LayoutPoint const&) const                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           /usr/local/google/home/yoichio/src/chromeAndroid/src/third_party/WebKit/Source/core/layout/LayoutBlock.cpp:882
I   10.807s Main    00c1ba4f  blink::PaintLayerPainter::paintFragmentWithPhase(blink::PaintPhase, blink::PaintLayerFragment const&, blink::GraphicsContext&, blink::ClipRect const&, blink::PaintLayerPaintingInfo const&, unsigned int, blink::PaintLayerPainter::ClipState)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               /usr/local/google/home/yoichio/src/chromeAndroid/src/third_party/WebKit/Source/core/paint/PaintLayerPainter.cpp:998
I   10.807s Main    00c1ab85  blink::PaintLayerPainter::paintBackgroundForFragments(WTF::Vector<blink::PaintLayerFragment, 1u, WTF::PartitionAllocator> const&, blink::GraphicsContext&, blink::LayoutRect const&, blink::PaintLayerPaintingInfo const&, unsigned int)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      /usr/local/google/home/yoichio/src/chromeAndroid/src/third_party/WebKit/Source/core/paint/PaintLayerPainter.cpp:1012
I   10.807s Main    00c1a2a7  blink::PaintLayerPainter::paintLayerContents(blink::GraphicsContext&, blink::PaintLayerPaintingInfo const&, unsigned int, blink::PaintLayerPainter::FragmentPolicy)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           /usr/local/google/home/yoichio/src/chromeAndroid/src/third_party/WebKit/Source/core/paint/PaintLayerPainter.cpp:533
I   10.807s Main    00b1e5f9  blink::CompositedLayerMapping::doPaintTask(blink::GraphicsLayerPaintInfo const&, blink::GraphicsLayer const&, unsigned int const&, blink::GraphicsContext&, blink::IntRect const&) const                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      /usr/local/google/home/yoichio/src/chromeAndroid/src/third_party/WebKit/Source/core/layout/compositing/CompositedLayerMapping.cpp:2985
I   10.807s Main    00b1ed67  blink::CompositedLayerMapping::paintContents(blink::GraphicsLayer const*, blink::GraphicsContext&, unsigned int, blink::IntRect const&) const                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 /usr/local/google/home/yoichio/src/chromeAndroid/src/third_party/WebKit/Source/core/layout/compositing/CompositedLayerMapping.cpp:3283
I   10.807s Main    00190841  blink::GraphicsLayer::paintWithoutCommit(blink::IntRect const*, blink::GraphicsContext::DisabledMode)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         /usr/local/google/home/yoichio/src/chromeAndroid/src/third_party/WebKit/Source/platform/graphics/GraphicsLayer.cpp:320
I   10.807s Main    0019061d  blink::GraphicsLayer::paint(blink::IntRect const*, blink::GraphicsContext::DisabledMode)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      /usr/local/google/home/yoichio/src/chromeAndroid/src/third_party/WebKit/Source/platform/graphics/GraphicsLayer.cpp:278
....
I   10.808s Main    0084e411  blink::FrameView::paintTree()                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 /usr/local/google/home/yoichio/src/chromeAndroid/src/third_party/WebKit/Source/core/frame/FrameView.cpp:3198
I   10.809s Main    0084d37f  blink::FrameView::updateLifecyclePhasesInternal(blink::DocumentLifecycle::LifecycleState)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     /usr/local/google/home/yoichio/src/chromeAndroid/src/third_party/WebKit/Source/core/frame/FrameView.cpp:3094
I   10.809s Main    00bd35ad  blink::PageAnimator::updateAllLifecyclePhases(blink::LocalFrame&)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             /usr/local/google/home/yoichio/src/chromeAndroid/src/third_party/WebKit/Source/core/page/PageAnimator.cpp:86
I   10.809s Main    00104abd  blink::WebViewImpl::updateAllLifecyclePhases()                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                /usr/local/google/home/yoichio/src/chromeAndroid/src/third_party/WebKit/Source/web/WebViewImpl.cpp:2042
I   10.809s Main    00b2d30d  content::RenderWidget::UpdateVisualState()                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    /usr/local/google/home/yoichio/src/chromeAndroid/src/content/renderer/render_widget.cc:944
I   10.809s Main    0014457d  cc::ProxyMain::BeginMainFrame(std::__ndk1::unique_ptr<cc::BeginMainFrameAndCommitState, std::__ndk1::default_delete<cc::BeginMainFrameAndCommitState> >)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
Blockedon: 372245

Comment 12 by yosin@chromium.org, May 19 2017

Status: Fixed (was: Available)
Mark Fixed since the root cause, issue 37245 , was fixed.

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