The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/5788a1b9e936ed523f8390eaa62a06a7b073bd7e

commit 5788a1b9e936ed523f8390eaa62a06a7b073bd7e
Author: Zhenyao Mo <zmo@chromium.org>
Date: Fri Feb 09 20:23:48 2018

Remove dead code related with ContentGpuClient and GL strings.

Now we collect GPUInfo on GPU startup, we always initialize GL bindings,
create a GL contetx, and collect the GL strings. No need for specific
mechanism on ChromeCAST.

BUG= 744658 , 808119 
TEST=bots
R=halliwell@chromium.org,piman@chromium.org

Change-Id: I23183baa03349e6fa3ce9d6598cbed426bd160a8
Reviewed-on: https://chromium-review.googlesource.com/907860
Reviewed-by: Luke Halliwell <halliwell@chromium.org>
Reviewed-by: Antoine Labour <piman@chromium.org>
Commit-Queue: Zhenyao Mo <zmo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#535807}
[modify] https://crrev.com/5788a1b9e936ed523f8390eaa62a06a7b073bd7e/chromecast/app/BUILD.gn
[modify] https://crrev.com/5788a1b9e936ed523f8390eaa62a06a7b073bd7e/chromecast/app/DEPS
[modify] https://crrev.com/5788a1b9e936ed523f8390eaa62a06a7b073bd7e/chromecast/app/cast_main_delegate.cc
[modify] https://crrev.com/5788a1b9e936ed523f8390eaa62a06a7b073bd7e/chromecast/app/cast_main_delegate.h
[delete] https://crrev.com/84780aff9daa47f8f18a9d9efd7c4e70590384f0/chromecast/gpu/BUILD.gn
[delete] https://crrev.com/84780aff9daa47f8f18a9d9efd7c4e70590384f0/chromecast/gpu/DEPS
[delete] https://crrev.com/84780aff9daa47f8f18a9d9efd7c4e70590384f0/chromecast/gpu/cast_content_gpu_client.cc
[delete] https://crrev.com/84780aff9daa47f8f18a9d9efd7c4e70590384f0/chromecast/gpu/cast_content_gpu_client.h
[modify] https://crrev.com/5788a1b9e936ed523f8390eaa62a06a7b073bd7e/chromecast/public/cast_sys_info.h
[modify] https://crrev.com/5788a1b9e936ed523f8390eaa62a06a7b073bd7e/content/public/gpu/content_gpu_client.cc
[modify] https://crrev.com/5788a1b9e936ed523f8390eaa62a06a7b073bd7e/content/public/gpu/content_gpu_client.h

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/2d2ca7044fa9dfdd06a5df8fddcbdc7d69c5683e

commit 2d2ca7044fa9dfdd06a5df8fddcbdc7d69c5683e
Author: Zhenyao Mo <zmo@chromium.org>
Date: Fri Feb 09 20:42:45 2018

Further clean up GpuDataManager{Impl}{Private}.

Now we no longer do a bunch of heavy ops (like collect GPUInfo, etc) in
Initialize(), we can simply merge it into constructor and that enables
some simplification.

BUG= 808119 
TEST=bots
R=kbr@chromium.org,piman@chromium.org

Change-Id: I696a146221ef32319a14294a0193c1659703295d
Reviewed-on: https://chromium-review.googlesource.com/910044
Commit-Queue: Zhenyao Mo <zmo@chromium.org>
Reviewed-by: Antoine Labour <piman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#535816}
[modify] https://crrev.com/2d2ca7044fa9dfdd06a5df8fddcbdc7d69c5683e/content/browser/browser_main_loop.cc
[modify] https://crrev.com/2d2ca7044fa9dfdd06a5df8fddcbdc7d69c5683e/content/browser/gpu/gpu_data_manager_impl.cc
[modify] https://crrev.com/2d2ca7044fa9dfdd06a5df8fddcbdc7d69c5683e/content/browser/gpu/gpu_data_manager_impl.h
[modify] https://crrev.com/2d2ca7044fa9dfdd06a5df8fddcbdc7d69c5683e/content/browser/gpu/gpu_data_manager_impl_private.cc
[modify] https://crrev.com/2d2ca7044fa9dfdd06a5df8fddcbdc7d69c5683e/content/browser/gpu/gpu_data_manager_impl_private.h

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/9307be37d14f846ea9c9df07ac8cc9079c8201c1

commit 9307be37d14f846ea9c9df07ac8cc9079c8201c1
Author: Zhenyao Mo <zmo@chromium.org>
Date: Fri Feb 23 00:23:01 2018

Remove info collection states from GPUInfo.

They are really a messy design. By returning a bool at various collector
function seems enough.

BUG= 808119 
TEST=bots
R=piman@chromium.org,kbr@chromium.org

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: I42dd69587d70d04930c81fdf9cfb727527e59ed6
Reviewed-on: https://chromium-review.googlesource.com/924699
Reviewed-by: Antoine Labour <piman@chromium.org>
Reviewed-by: Daniel Cheng <dcheng@chromium.org>
Reviewed-by: Kenneth Russell <kbr@chromium.org>
Commit-Queue: Zhenyao Mo <zmo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#538636}
[modify] https://crrev.com/9307be37d14f846ea9c9df07ac8cc9079c8201c1/components/viz/service/gl/gpu_service_impl.cc
[modify] https://crrev.com/9307be37d14f846ea9c9df07ac8cc9079c8201c1/content/browser/gpu/gpu_data_manager_impl_private.cc
[modify] https://crrev.com/9307be37d14f846ea9c9df07ac8cc9079c8201c1/content/browser/gpu/gpu_data_manager_impl_private.h
[modify] https://crrev.com/9307be37d14f846ea9c9df07ac8cc9079c8201c1/content/renderer/renderer_blink_platform_impl.cc
[modify] https://crrev.com/9307be37d14f846ea9c9df07ac8cc9079c8201c1/gpu/config/gpu_info.cc
[modify] https://crrev.com/9307be37d14f846ea9c9df07ac8cc9079c8201c1/gpu/config/gpu_info.h
[modify] https://crrev.com/9307be37d14f846ea9c9df07ac8cc9079c8201c1/gpu/config/gpu_info_collector.cc
[modify] https://crrev.com/9307be37d14f846ea9c9df07ac8cc9079c8201c1/gpu/config/gpu_info_collector.h
[modify] https://crrev.com/9307be37d14f846ea9c9df07ac8cc9079c8201c1/gpu/config/gpu_info_collector_android.cc
[modify] https://crrev.com/9307be37d14f846ea9c9df07ac8cc9079c8201c1/gpu/config/gpu_info_collector_fuchsia.cc
[modify] https://crrev.com/9307be37d14f846ea9c9df07ac8cc9079c8201c1/gpu/config/gpu_info_collector_linux.cc
[modify] https://crrev.com/9307be37d14f846ea9c9df07ac8cc9079c8201c1/gpu/config/gpu_info_collector_mac.mm
[modify] https://crrev.com/9307be37d14f846ea9c9df07ac8cc9079c8201c1/gpu/config/gpu_info_collector_unittest.cc
[modify] https://crrev.com/9307be37d14f846ea9c9df07ac8cc9079c8201c1/gpu/config/gpu_info_collector_win.cc
[modify] https://crrev.com/9307be37d14f846ea9c9df07ac8cc9079c8201c1/gpu/config/gpu_info_unittest.cc
[modify] https://crrev.com/9307be37d14f846ea9c9df07ac8cc9079c8201c1/gpu/config/gpu_test_config.cc
[modify] https://crrev.com/9307be37d14f846ea9c9df07ac8cc9079c8201c1/gpu/ipc/common/gpu_info.mojom
[modify] https://crrev.com/9307be37d14f846ea9c9df07ac8cc9079c8201c1/gpu/ipc/common/gpu_info_struct_traits.cc
[modify] https://crrev.com/9307be37d14f846ea9c9df07ac8cc9079c8201c1/gpu/ipc/common/gpu_info_struct_traits.h
[modify] https://crrev.com/9307be37d14f846ea9c9df07ac8cc9079c8201c1/gpu/ipc/common/struct_traits_unittest.cc
[modify] https://crrev.com/9307be37d14f846ea9c9df07ac8cc9079c8201c1/gpu/ipc/service/gpu_init.cc

Closing this bug as I don't plan to do further cleanup on this any time soon.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/4be07e7fe7b5f82cb45f0a25eb458f4e66b234b2

commit 4be07e7fe7b5f82cb45f0a25eb458f4e66b234b2
Author: Zhenyao Mo <zmo@chromium.org>
Date: Wed Feb 28 01:17:25 2018

Simplify Win GPU histogram code a little bit.

So we don't have to update this code everytime we support a new Windows version.

BUG= 808119 
TEST=bots
R=kbr@chromium.org

Change-Id: I1ab720387584027303b87a96d2c5350204603f5e
Reviewed-on: https://chromium-review.googlesource.com/924523
Reviewed-by: Robert Kaplow <rkaplow@chromium.org>
Reviewed-by: Scott Graham <scottmg@chromium.org>
Reviewed-by: Kenneth Russell <kbr@chromium.org>
Commit-Queue: Zhenyao Mo <zmo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#539615}
[modify] https://crrev.com/4be07e7fe7b5f82cb45f0a25eb458f4e66b234b2/base/win/windows_version.h
[modify] https://crrev.com/4be07e7fe7b5f82cb45f0a25eb458f4e66b234b2/content/browser/gpu/gpu_data_manager_impl_private.cc
[modify] https://crrev.com/4be07e7fe7b5f82cb45f0a25eb458f4e66b234b2/tools/metrics/histograms/enums.xml
[modify] https://crrev.com/4be07e7fe7b5f82cb45f0a25eb458f4e66b234b2/tools/metrics/histograms/histograms.xml