Add a workaround for copyTexImage2D as it is sometimes broken on OSX.
copyTexImage2D fails when all of these conditions are met:
1. The internal format of the new texture is GL_ALPHA, GL_RED, or GL_RG. There
are probably a couple more. GL_RGB and GL_RGBA always work fine.
2. The GPU is from Nvidia.
3. The source texture is backed by an IOSurface.
BUG=581777
CQ_INCLUDE_TRYBOTS=tryserver.chromium.win:win_optional_gpu_tests_rel
Review URL: https://codereview.chromium.org/1736093002
Cr-Commit-Position: refs/heads/master@{#381488}
10 files changed
