The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/9aa5c81cef82581927359413d7b1522352d72965

commit 9aa5c81cef82581927359413d7b1522352d72965
Author: Vaclav Brozek <vabr@chromium.org>
Date: Thu Jun 22 11:10:20 2017

Disable fetch-canvas-tainting-cache.https.html on Win10

Disable
external/wpt/service-workers/service-worker/fetch-canvas-tainting-cache.https.html,
more info on the bug.

NOTRY=true
TBR=qyearsley@google.com
BUG= 735883 

Change-Id: I32209d9e45a2049f816d2b52755722415783ded1
Reviewed-on: https://chromium-review.googlesource.com/544860
Commit-Queue: Vaclav Brozek <vabr@chromium.org>
Reviewed-by: Vaclav Brozek <vabr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#481504}
[modify] https://crrev.com/9aa5c81cef82581927359413d7b1522352d72965/third_party/WebKit/LayoutTests/TestExpectations

The flakes started when this test was enabled at:
https://chromium-review.googlesource.com/c/536356/

We expected to fail in one way:
"cross_origin: use-credentials must be LOAD_ERROR but NOT_TAINTED"

But failed in another:
"cross_origin:  must be TAINTED but NOT_TAINTED"

Leon can you look?

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/b0041268bdb98f23e9b89ab3205adb93631bd5a8

commit b0041268bdb98f23e9b89ab3205adb93631bd5a8
Author: Matt Falkenhagen <falken@chromium.org>
Date: Fri Jun 23 06:39:34 2017

Gardening: Revise service worker bug links and expectations.

TBR=horo

Bug:  735883 
Change-Id: Ia974a3c566c677d3f5bfdaedee5ef5a53397f6fb
Reviewed-on: https://chromium-review.googlesource.com/544728
Reviewed-by: Matt Falkenhagen <falken@chromium.org>
Reviewed-by: Tim 'mithro' Ansell <tansell@chromium.org>
Reviewed-by: Tsuyoshi Horo <horo@chromium.org>
Commit-Queue: Matt Falkenhagen <falken@chromium.org>
Cr-Commit-Position: refs/heads/master@{#481817}
[modify] https://crrev.com/b0041268bdb98f23e9b89ab3205adb93631bd5a8/third_party/WebKit/LayoutTests/TestExpectations

Both tests are flaky:
fetch-canvas-tainting-cache.https.html
fetch-canvas-tainting.https.html

I uploaded CL https://chromium-review.googlesource.com/c/549857/ to fix the failure mentioned at comment #3.

Note:
Currently both tests are still flaky, the root cause would be fixed from the part of resource fetcher:
https://chromium-review.googlesource.com/c/536356/1/third_party/WebKit/LayoutTests/external/wpt/service-workers/service-worker/resources/fetch-canvas-tainting-iframe.html#235
https://chromium-review.googlesource.com/c/516925/40/third_party/WebKit/Source/platform/loader/fetch/ResourceFetcher.cpp#1037
 
After fixed that, we can finally remove both these tests from TestExpectations and remove their corresponding -expected.txt files.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/f970e7925878bb086007ca4d8fefaa866150478f

commit f970e7925878bb086007ca4d8fefaa866150478f
Author: Han Leon <leon.han@intel.com>
Date: Wed Jun 28 07:05:39 2017

[ServiceWorker] Fix wpt test fetch-canvas-tainting-iframe.html

Fetching image from remote url with 'mode=cors&credentials=same-origin'
should not taint the image object without crossOrigin setting.

'
The response type is "cors" which is one of CORS-same-origin.

https://html.spec.whatwg.org/#terminology-3
> A response whose type is "basic", "cors", or "default" is
> CORS-same-origin.

So the origin of the image is the element's node document's origin.

https://html.spec.whatwg.org/#origin:cors-cross-origin
> For images of img elements
>  If the image data is CORS-cross-origin
>   A unique opaque origin assigned when the image is created.
>  If the image data is CORS-same-origin
>   The img element's node document's origin.

So the origin-clean flag of the element is true.

https://html.spec.whatwg.org/#images-2:concept-canvas-origin-clean-6
> If the origin of image's image is not the same origin as the origin
> specified by the entry settings object, then set the origin-clean flag
> of the ImageBitmap object's bitmap to false.

So the image should not be tainted.
'

BUG= 735883 
TEST=blink_tests
external/wpt/service-workers/service-worker/fetch-canvas-tainting.https.html
external/wpt/service-workers/service-worker/fetch-canvas-tainting-cache.https.html

Change-Id: I22521f1d78f6fb6bb122b166ef0d0b3ca70857ad
Reviewed-on: https://chromium-review.googlesource.com/549857
Reviewed-by: Tsuyoshi Horo <horo@chromium.org>
Commit-Queue: Han Leon <leon.han@intel.com>
Cr-Commit-Position: refs/heads/master@{#482909}
[modify] https://crrev.com/f970e7925878bb086007ca4d8fefaa866150478f/third_party/WebKit/LayoutTests/external/wpt/service-workers/service-worker/resources/fetch-canvas-tainting-iframe.html

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/9f76987f9f8ee5c7b0647270db7db4dde49746e7

commit 9f76987f9f8ee5c7b0647270db7db4dde49746e7
Author: Han Leon <leon.han@intel.com>
Date: Fri Jul 14 07:22:05 2017

[ServiceWorker] Forbid reusing resource if requests have different credentials mode

This CL is to fix the root cause for failures of service worker wpt
tests.

The test loads an url for an Image object with 'anonymous' crossOrigin
property at line227 of fetch-canvas-tainting-iframe.html, succeeds in
loading without tainting, and then it loads the url again for another
Image object with 'use-credentials' crossOrigin property at line234,
this is expected to result in loading error, but currently it results
in success. The root cause is that Memory Cache is reusing the first
time's response for the second time resource request, although these
two requests have different credentials mode.

BUG= 735883 
TEST=blink_tests
external/wpt/service-workers/service-worker/fetch-canvas-tainting.https.html
external/wpt/service-workers/service-worker/fetch-canvas-tainting-cache.https.html

Change-Id: I9acdcf3811b6dcd5ea2ffe858ec35f51f7f2cc3f
Reviewed-on: https://chromium-review.googlesource.com/567690
Reviewed-by: Tsuyoshi Horo <horo@chromium.org>
Reviewed-by: Takeshi Yoshino <tyoshino@chromium.org>
Commit-Queue: Han Leon <leon.han@intel.com>
Cr-Commit-Position: refs/heads/master@{#486697}
[modify] https://crrev.com/9f76987f9f8ee5c7b0647270db7db4dde49746e7/third_party/WebKit/LayoutTests/TestExpectations
[delete] https://crrev.com/6f246deb08d7f37dfa7036c62d608e4fddbfe098/third_party/WebKit/LayoutTests/external/wpt/service-workers/service-worker/fetch-canvas-tainting-cache.https-expected.txt
[delete] https://crrev.com/6f246deb08d7f37dfa7036c62d608e4fddbfe098/third_party/WebKit/LayoutTests/external/wpt/service-workers/service-worker/fetch-canvas-tainting.https-expected.txt
[delete] https://crrev.com/6f246deb08d7f37dfa7036c62d608e4fddbfe098/third_party/WebKit/LayoutTests/platform/mac-mac10.11/virtual/off-main-thread-fetch/external/wpt/service-workers/service-worker/fetch-canvas-tainting.https-expected.txt
[delete] https://crrev.com/6f246deb08d7f37dfa7036c62d608e4fddbfe098/third_party/WebKit/LayoutTests/platform/mac-mac10.9/virtual/off-main-thread-fetch/external/wpt/service-workers/service-worker/fetch-canvas-tainting-cache.https-expected.txt
[delete] https://crrev.com/6f246deb08d7f37dfa7036c62d608e4fddbfe098/third_party/WebKit/LayoutTests/platform/mac-retina/virtual/off-main-thread-fetch/external/wpt/service-workers/service-worker/fetch-canvas-tainting.https-expected.txt
[delete] https://crrev.com/6f246deb08d7f37dfa7036c62d608e4fddbfe098/third_party/WebKit/LayoutTests/platform/mac/virtual/off-main-thread-fetch/external/wpt/service-workers/service-worker/fetch-canvas-tainting.https-expected.txt
[modify] https://crrev.com/9f76987f9f8ee5c7b0647270db7db4dde49746e7/third_party/WebKit/Source/platform/loader/fetch/MemoryCacheCorrectnessTest.cpp
[modify] https://crrev.com/9f76987f9f8ee5c7b0647270db7db4dde49746e7/third_party/WebKit/Source/platform/loader/fetch/RawResource.h
[modify] https://crrev.com/9f76987f9f8ee5c7b0647270db7db4dde49746e7/third_party/WebKit/Source/platform/loader/fetch/RawResourceTest.cpp
[modify] https://crrev.com/9f76987f9f8ee5c7b0647270db7db4dde49746e7/third_party/WebKit/Source/platform/loader/fetch/Resource.cpp
[modify] https://crrev.com/9f76987f9f8ee5c7b0647270db7db4dde49746e7/third_party/WebKit/Source/platform/loader/fetch/ResourceTest.cpp