Flaky based on https://test-results.appspot.com/dashboards/flakiness_dashboard.html#testType=context_lost_tests&tests=gpu_tests.context_lost_integration_test.ContextLostIntegrationTest.ContextLost_WebGLUnblockedAfterUserInitiatedReload%20

Disabling the test with 
https://chromium-review.googlesource.com/c/chromium/src/+/1267235

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/9780253fa75f648aea3070fa2079e1f314d33f48

commit 9780253fa75f648aea3070fa2079e1f314d33f48
Author: Christos Froussios <cfroussios@chromium.org>
Date: Tue Oct 16 14:34:12 2018

Disable ContextLost_WebGLUnblockedAfterUserInitiatedReload

gpu_tests.context_lost_integration_test.ContextLostIntegrationTest.ContextLost_WebGLUnblockedAfterUserInitiatedReload in context_lost_tests
is flaky on Win10 Debug

TBR=kbr@chromium.org

Bug:  895765 ,  879423 
Change-Id: Ic36400494df68f257329e040be2c72f1ad2ec3a6
Reviewed-on: https://chromium-review.googlesource.com/c/1283049
Commit-Queue: Christos Froussios <cfroussios@chromium.org>
Reviewed-by: Christos Froussios <cfroussios@chromium.org>
Cr-Commit-Position: refs/heads/master@{#599973}
[modify] https://crrev.com/9780253fa75f648aea3070fa2079e1f314d33f48/content/test/gpu/gpu_tests/context_lost_expectations.py

The test failures were caused by a crash in cc:

https://ci.chromium.org/p/chromium/builders/luci.chromium.ci/Win10%20Debug%20%28NVIDIA%29/8736

https://chromium-swarm.appspot.com/task?id=4094493a76ef5a10&refresh=10&show_raw=1

  Stack Trace:
  ********************************************************************************
  	Last event: 1160.1b74: Access violation - code c0000005 (first/second chance not available)
  	  debugger time: Mon Oct 15 23:05:01.906 2018 (UTC - 7:00)
  	ChildEBP RetAddr  Args to Child              
  	1377e108 5d7f854c 1377e154 5d7f08a0 1377e13c cc!cc::TileManager::CheckRasterFinishedQueries+0x5d
  	1377e118 5d7f848f 5d7f08a0 1377e154 1377e154 cc!??$Invoke@P8TileManager@cc@@AEXXZPAV12@$$V@?$FunctorTraits@P8TileManager@cc@@AEXXZX@internal@base@@SAXP8TileManager@cc@@AEXXZ$$QAPAV34@@Z+0x1c
  	1377e13c 5d7f8425 0ec2da4c 1377e154 0ec2da4c cc!base::internal::InvokeHelper<0,void>::MakeItSo<void (__thiscall cc::TileManager::*const &)(void),cc::TileManager *>+0x4f
  	1377e15c 5d7f830f 0ec2da4c 0ec2da50 00000084 cc!base::internal::Invoker<base::internal::BindState<void (__thiscall cc::TileManager::*)(void),base::internal::UnretainedWrapper<cc::TileManager> >,void __cdecl(void)>::RunImpl<void (__thiscall cc::TileManager::*const &)(void),std::tuple<base::internal::UnretainedWrapper<cc::TileManager> > const &,0>+0x55
  	1377e184 5d62f122 0ec2da38 5d7f82d0 0e9d3310 cc!base::internal::Invoker<base::internal::BindState<void (__thiscall cc::TileManager::*)(void),base::internal::UnretainedWrapper<cc::TileManager> >,void __cdecl(void)>::Run+0x3f
  	1377e1a0 5d62efbf 0e9d3310 1377e1bc 5d62f411 cc!base::RepeatingCallback<void __cdecl(void)>::Run+0x32
  	1377e1ac 5d62f411 0ec70d80 5d62efb0 1377e1e0 cc!??$ForwardRepeating@$$V@?$CancelableCallbackImpl@V?$RepeatingCallback@$$A6AXXZ@base@@@internal@base@@AAEXXZ+0xf
  	1377e1bc 5d62f326 5d62efb0 0ec70d80 0ec70d80 cc!??$Invoke@P8?$CancelableCallbackImpl@V?$RepeatingCallback@$$A6AXXZ@base@@@internal@base@@AEXXZABV?$WeakPtr@V?$CancelableCallbackImpl@V?$RepeatingCallback@$$A6AXXZ@base@@@internal@base@@@3@$$V@?$FunctorTraits@P8?$CancelableCallbackImpl@V?$RepeatingCallback@$$A6AXXZ@base@@@internal@base@@AEXXZX@internal@base@@SAXP8?$CancelableCallbackImpl@V?$RepeatingCallback@$$A6AXXZ@base@@@12@AEXXZABV?$WeakPtr@V?$CancelableCallbackImpl@V?$RepeatingCallback@$$A6AXXZ@base@@@internal@base@@@2@@Z+0x21
  	1377e1e0 5d62f2ba 0ec70d7c 0ec70d80 0ec70d80 cc!??$MakeItSo@ABQ8?$CancelableCallbackImpl@V?$RepeatingCallback@$$A6AXXZ@base@@@internal@base@@AEXXZABV?$WeakPtr@V?$CancelableCallbackImpl@V?$RepeatingCallback@$$A6AXXZ@base@@@internal@base@@@3@$$V@?$InvokeHelper@$00X@internal@base@@SAXABQ8?$CancelableCallbackImpl@V?$RepeatingCallback@$$A6AXXZ@base@@@12@AEXXZABV?$WeakPtr@V?$CancelableCallbackImpl@V?$RepeatingCallback@$$A6AXXZ@base@@@internal@base@@@2@@Z+0x66
...

Un-duplicating this, blocking on other CLs, and reverting the suppression - the test failure was real, and catching a newly-introduced bug.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/e2cfad3bebf1e25258f7a975a45c4c7da3cf3b5d

commit e2cfad3bebf1e25258f7a975a45c4c7da3cf3b5d
Author: Kenneth Russell <kbr@chromium.org>
Date: Tue Oct 16 19:03:51 2018

Revert "Disable ContextLost_WebGLUnblockedAfterUserInitiatedReload"

This reverts commit 9780253fa75f648aea3070fa2079e1f314d33f48.

Reason for revert: test failure was real, and caused by https://chromium-review.googlesource.com/1267235 , which has since been reverted.

Original change's description:
> Disable ContextLost_WebGLUnblockedAfterUserInitiatedReload
> 
> gpu_tests.context_lost_integration_test.ContextLostIntegrationTest.ContextLost_WebGLUnblockedAfterUserInitiatedReload in context_lost_tests
> is flaky on Win10 Debug
> 
> TBR=kbr@chromium.org
> 
> Bug:  895765 ,  879423 
> Change-Id: Ic36400494df68f257329e040be2c72f1ad2ec3a6
> Reviewed-on: https://chromium-review.googlesource.com/c/1283049
> Commit-Queue: Christos Froussios <cfroussios@chromium.org>
> Reviewed-by: Christos Froussios <cfroussios@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#599973}

TBR=kbr@chromium.org,cfroussios@chromium.org

Change-Id: I33951694d070e6eb183eba9a05d9ea517f81ce65
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug:  895765 ,  879423 
Reviewed-on: https://chromium-review.googlesource.com/c/1283945
Reviewed-by: Kenneth Russell <kbr@chromium.org>
Commit-Queue: Kenneth Russell <kbr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#600061}
[modify] https://crrev.com/e2cfad3bebf1e25258f7a975a45c4c7da3cf3b5d/content/test/gpu/gpu_tests/context_lost_expectations.py

This test should be reliable again.

https://chromium-review.googlesource.com/c/chromium/src/+/1283487 is relanding the change here with the bug from the original change fixed. I'll keep an eye as well but if you see the flakiness here return, please feel free to revert the reland.

Thanks Khushal.