The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/e9cc5226db4f425c2dca8b0948d3ac36a99888b6

commit e9cc5226db4f425c2dca8b0948d3ac36a99888b6
Author: Eric Karl <ericrk@chromium.org>
Date: Wed Jan 24 17:54:32 2018

Unbind discardable textures on client side on unlock

Currently, when a GPU discardable entry is unlocked, it clears any
texture bindings on the GPU service side. These are also tracked on the
client side. With this change, we clear client side bindings as well.

R=piman

Bug:  804478 
Cq-Include-Trybots: master.tryserver.chromium.android:android_optional_gpu_tests_rel;master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel
Change-Id: I73d2cefb72fcc4e6a4302b83de55ff850038c0ca
Reviewed-on: https://chromium-review.googlesource.com/879545
Commit-Queue: Eric Karl <ericrk@chromium.org>
Reviewed-by: Antoine Labour <piman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#531599}
[modify] https://crrev.com/e9cc5226db4f425c2dca8b0948d3ac36a99888b6/gpu/command_buffer/client/client_discardable_texture_manager.cc
[modify] https://crrev.com/e9cc5226db4f425c2dca8b0948d3ac36a99888b6/gpu/command_buffer/client/client_discardable_texture_manager.h
[modify] https://crrev.com/e9cc5226db4f425c2dca8b0948d3ac36a99888b6/gpu/command_buffer/client/gles2_implementation.cc
[modify] https://crrev.com/e9cc5226db4f425c2dca8b0948d3ac36a99888b6/gpu/command_buffer/client/gles2_implementation.h
[modify] https://crrev.com/e9cc5226db4f425c2dca8b0948d3ac36a99888b6/gpu/command_buffer/client/gles2_implementation_unittest.cc