The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/19efc2d1c10071f8f16d09202da21769bcfaa459

commit 19efc2d1c10071f8f16d09202da21769bcfaa459
Author: Fernando Serboncini <fserb@chromium.org>
Date: Wed Aug 15 19:48:49 2018

Add OffscreenCanvas support on webgl2 texImage

TBR=kbr@chromium.org

Bug:  874531 
Cq-Include-Trybots: luci.chromium.try:android_optional_gpu_tests_rel;luci.chromium.try:linux_optional_gpu_tests_rel;luci.chromium.try:mac_optional_gpu_tests_rel;luci.chromium.try:win_optional_gpu_tests_rel
Change-Id: Ib8ee30c3514dff841f185367642d13f271a59ac0
Reviewed-on: https://chromium-review.googlesource.com/1176195
Commit-Queue: Fernando Serboncini <fserb@chromium.org>
Reviewed-by: Fernando Serboncini <fserb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#583363}
[modify] https://crrev.com/19efc2d1c10071f8f16d09202da21769bcfaa459/third_party/blink/renderer/modules/webgl/webgl2_rendering_context_base.cc
[modify] https://crrev.com/19efc2d1c10071f8f16d09202da21769bcfaa459/third_party/blink/renderer/modules/webgl/webgl2_rendering_context_base.h
[modify] https://crrev.com/19efc2d1c10071f8f16d09202da21769bcfaa459/third_party/blink/renderer/modules/webgl/webgl2_rendering_context_base.idl