Helpful link for seeing recent webkit_layout_tests flakes on that bot:

https://test-results.appspot.com/dashboards/flakiness_dashboard.html#testType=webkit_layout_tests&showFlaky=true&builder=chromium.win%3AWin7%20Tests%20(dbg)(1)

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/1f0394f5d1861679d6a15fe7e1c7166ce74a12c5

commit 1f0394f5d1861679d6a15fe7e1c7166ce74a12c5
Author: Matt Wolenetz <wolenetz@chromium.org>
Date: Thu Mar 22 17:24:31 2018

fast/peerconnection/RTCPeerConnection-many.html is flaky

Mark as flaky in Win

TBR=hbos@chromium.org,hta@chromium.org

BUG=824830, 823003 
NO-TRY=True

Change-Id: Iabd4ddc714220082b332754c093652178ce91c27
Reviewed-on: https://chromium-review.googlesource.com/976048
Reviewed-by: Matthew Wolenetz <wolenetz@chromium.org>
Commit-Queue: Matthew Wolenetz <wolenetz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#545125}
[modify] https://crrev.com/1f0394f5d1861679d6a15fe7e1c7166ce74a12c5/third_party/WebKit/LayoutTests/TestExpectations

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/8efbe4078c694df162b6da0230c0e66eb329db0d

commit 8efbe4078c694df162b6da0230c0e66eb329db0d
Author: Matt Wolenetz <wolenetz@chromium.org>
Date: Thu Mar 22 18:52:02 2018

external/wpt/html/semantics/links/following-hyperlinks/activation-behavior.window.html is flaky

Mark as flaky on Win and Linux

TBR=dom-dev@chromium.org,qyearsley@chromium.org

BUG=824848, 823003 
NO-TRY=True

Change-Id: I99541729761173fae58d781462464b2a4cd6fd7f
Reviewed-on: https://chromium-review.googlesource.com/976369
Reviewed-by: Matthew Wolenetz <wolenetz@chromium.org>
Commit-Queue: Matthew Wolenetz <wolenetz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#545176}
[modify] https://crrev.com/8efbe4078c694df162b6da0230c0e66eb329db0d/third_party/WebKit/LayoutTests/TestExpectations

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/36a4d2e45599d1a9564696cd1d82d0a826e792cd

commit 36a4d2e45599d1a9564696cd1d82d0a826e792cd
Author: Matt Wolenetz <wolenetz@chromium.org>
Date: Thu Mar 22 19:23:12 2018

inspector-protocol/heap-profiler/heap-objects-tracking.js is flaky

Mark as flaky.

TBR=dgozman@chromium.org
BUG= 824904 , 823003 
NO-TRY=true

Change-Id: Ic7f72855a70e3bece90537808595140ffe7334ea
Reviewed-on: https://chromium-review.googlesource.com/976380
Reviewed-by: Matthew Wolenetz <wolenetz@chromium.org>
Commit-Queue: Matthew Wolenetz <wolenetz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#545190}
[modify] https://crrev.com/36a4d2e45599d1a9564696cd1d82d0a826e792cd/third_party/WebKit/LayoutTests/TestExpectations

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/ecaec68d991fbde81d369d297da3b0a96d073b8a

commit ecaec68d991fbde81d369d297da3b0a96d073b8a
Author: Matt Wolenetz <wolenetz@chromium.org>
Date: Thu Mar 22 20:29:06 2018

svg/animations/getCurrentTime-pause-unpause.html is flaky

Mark flaky.

BUG= 824930 , 823003 
TBR=chrishtr@chromium.org
NO-TRY=True

Change-Id: Ib8c1e422d31210c8ae20742bd823000eabc3be3a
Reviewed-on: https://chromium-review.googlesource.com/976531
Reviewed-by: Matthew Wolenetz <wolenetz@chromium.org>
Commit-Queue: Matthew Wolenetz <wolenetz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#545228}
[modify] https://crrev.com/ecaec68d991fbde81d369d297da3b0a96d073b8a/third_party/WebKit/LayoutTests/TestExpectations

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/6af388cc133b6271b938182937106d3dbe0d20b5

commit 6af388cc133b6271b938182937106d3dbe0d20b5
Author: Matt Wolenetz <wolenetz@chromium.org>
Date: Thu Mar 22 20:31:15 2018

media/controls/video-controls-with-cast-rendering.html is flaky

Mark as flaky on Win and Mac

TBR=aberent@chromium.org,mlamouri@chromium.org
BUG=824775, 823003 
NO-TRY=True

Change-Id: Ic1d3ab4d7a3e7d6f781d335430e7869f274e82d1
Reviewed-on: https://chromium-review.googlesource.com/976536
Commit-Queue: Matthew Wolenetz <wolenetz@chromium.org>
Reviewed-by: Matthew Wolenetz <wolenetz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#545232}
[modify] https://crrev.com/6af388cc133b6271b938182937106d3dbe0d20b5/third_party/WebKit/LayoutTests/TestExpectations

See also https://chromium.googlesource.com/chromium/src/+/e8a86188ea66 (I forgot to link to this bug):
Marked: external/wpt/css/css-font-loading/idlharness.https.html is flaky

At this point, no more recent (last few hours) layout tests are causing failure of Win7 Tests (dbg)(1) bot.

I'll move on to the other tests that are still causing failures on the bot:
failed browser_tests
failed telemetry_unittests

Note that "failed telemetry_perf_unittests (experimental)" is tracked separately by bug 814791

In bug 825038, I'm initially deferring to test owners to determine how best to disable or fix the flakily timing-out PDF[Isolated]ExtensionTest.MultipleDomains browser_tests.

Note to sheriffs: if that issue isn't visible to you and those tests are still flaky, please request info/status on bug 825038 from tsepez@.

Folks: "telemetry_perf_unittest (experimental)" doesn't change the status code of the build, so you can safely ignore it for now

@#12 - thank you.

Landing soon: https://chromium-review.googlesource.com/c/chromium/src/+/978452 marks several among external/wpt/css/css-transitions/properties-value-* as flaky

With #14, I'd expect this bot's webkit_layout_tests to resume passing.

Bugdroid isn't updating bugs :( - I just landed this: https://chromium-review.googlesource.com/c/chromium/src/+/978620

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/43287799ee8412a5c737c1671c51d2dfc7ad8963

commit 43287799ee8412a5c737c1671c51d2dfc7ad8963
Author: Matt Wolenetz <wolenetz@chromium.org>
Date: Fri Mar 23 18:40:14 2018

NetInternalsTest.netInternalsEventsViewFilter flaky timeout on dbg Win

Conditionally disables this test on dbg win.

BUG=825282, 823003 
TBR=mmenke@chromium.org
NO-TRY=True

Change-Id: I213d7500bef405ce1ebc4c6f100ab6ff21825fcb
Reviewed-on: https://chromium-review.googlesource.com/978620
Reviewed-by: Matthew Wolenetz <wolenetz@chromium.org>
Reviewed-by: Matt Menke <mmenke@chromium.org>
Commit-Queue: Matthew Wolenetz <wolenetz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#545531}
[modify] https://crrev.com/43287799ee8412a5c737c1671c51d2dfc7ad8963/chrome/test/data/webui/net_internals/events_view.js

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/6e384121dcb312b7007e90438cffe717f5ac75c4

commit 6e384121dcb312b7007e90438cffe717f5ac75c4
Author: Matt Wolenetz <wolenetz@chromium.org>
Date: Fri Mar 23 19:52:19 2018

browser_test TabRestoreTest.RestoreTabWithSpecialURL[OnBack] flaky

Adds conditional disabling of these two tests.

BUG=825305, 823003 
TBR=sky@chromium.org,creis@chromium.org
NO-TRY=True

Change-Id: I9c24882c82db878883a9cd8df9abe3f95723634c
Reviewed-on: https://chromium-review.googlesource.com/978666
Commit-Queue: Matthew Wolenetz <wolenetz@chromium.org>
Reviewed-by: Matthew Wolenetz <wolenetz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#545560}
[modify] https://crrev.com/6e384121dcb312b7007e90438cffe717f5ac75c4/chrome/browser/sessions/tab_restore_browsertest.cc

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/102d3c2cb0d22f0cd05fe213a389bbf725a452b0

commit 102d3c2cb0d22f0cd05fe213a389bbf725a452b0
Author: Matt Wolenetz <wolenetz@chromium.org>
Date: Fri Mar 23 20:49:54 2018

browser_test FindInPageControllerTest.FindLongString is flaky

It's flaky on Win7 Tests (dbg)(1).
This change disables it in debug Windows builds.

BUG= 825341 , 823003 
TBR=pkasting@chromium.org
NO-TRY=True

Change-Id: Ibb04812ca20081ec55cbc1bdbef01464ddb062f3
Reviewed-on: https://chromium-review.googlesource.com/978835
Reviewed-by: Matthew Wolenetz <wolenetz@chromium.org>
Commit-Queue: Matthew Wolenetz <wolenetz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#545574}
[modify] https://crrev.com/102d3c2cb0d22f0cd05fe213a389bbf725a452b0/chrome/browser/ui/find_bar/find_bar_host_browsertest.cc

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/3748dde9073209c6011f174d5eaf8496444f869e

commit 3748dde9073209c6011f174d5eaf8496444f869e
Author: Matt Wolenetz <wolenetz@chromium.org>
Date: Fri Mar 23 21:58:53 2018

CrSettingsAndroidAppsPageTest.All flaky timeout on dbg Win

Conditionally disables this test on dbg win.

BUG=825304, 823003 
TBR=dpapad@chromium.org
NO-TRY=True

Change-Id: Ic6950d3d6a2e1fd52a6d30f1f6a549045619ee2f
Reviewed-on: https://chromium-review.googlesource.com/978863
Reviewed-by: Matthew Wolenetz <wolenetz@chromium.org>
Commit-Queue: Matthew Wolenetz <wolenetz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#545579}
[modify] https://crrev.com/3748dde9073209c6011f174d5eaf8496444f869e/chrome/test/data/webui/settings/cr_settings_browsertest.js

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/71be3f13ec8bac3556fefb865822893d9cda34ca

commit 71be3f13ec8bac3556fefb865822893d9cda34ca
Author: Matt Wolenetz <wolenetz@chromium.org>
Date: Fri Mar 23 22:31:36 2018

PDF[Isolated]ExtensionTest.MultipleDomains flaky timeout on win dbg

Conditionally disables these 2 tests on windows dbg builds.

BUG=825038, 823003 
TBR=tsepez@chromium.org,thestig@chromium.org
NO-TRY=True

Change-Id: I31b9365a71c29c794af7c1c424d3f6eeed9ea708
Reviewed-on: https://chromium-review.googlesource.com/978940
Reviewed-by: Matthew Wolenetz <wolenetz@chromium.org>
Commit-Queue: Matthew Wolenetz <wolenetz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#545596}
[modify] https://crrev.com/71be3f13ec8bac3556fefb865822893d9cda34ca/chrome/browser/pdf/pdf_extension_test.cc

I believe I've now marked flaky / conditionally disabled the vast majority of the tests that were causing Win7 Tests (dbg)(1) to fail recently.

With that, I'll close this tracking issue.