The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/f9a9198786d79148f6b61399c69498ab94cbf1b7

commit f9a9198786d79148f6b61399c69498ab94cbf1b7
Author: Christopher Cameron <ccameron@chromium.org>
Date: Tue Nov 21 20:32:28 2017

Fix --disable-remote-core-animation path

Ensure ca_context_id be initialized to 0 (otherwise the browser will
attempt to use it).

TBR=zmo

Bug:  785599 
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: Idcc8b0e6922c9842ecc7462fe93788aa942793db
Reviewed-on: https://chromium-review.googlesource.com/779306
Reviewed-by: ccameron <ccameron@chromium.org>
Commit-Queue: ccameron <ccameron@chromium.org>
Cr-Commit-Position: refs/heads/master@{#518368}
[modify] https://crrev.com/f9a9198786d79148f6b61399c69498ab94cbf1b7/gpu/ipc/service/image_transport_surface_delegate.h