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There is an ongoing issue with failures on Mac OSX causing crashes
on the renderer side. All we know so far is that it has something to do
with failures with our usage of GL_COMMANDS_COMPLETED_CHROMIUM. We
suspect it has something to do with multiple GPUs but it is hard to
tell for sure. This will at least let us know what is going on for
the GPU side.

BUG=467678

Review URL: https://codereview.chromium.org/1242913003

Cr-Commit-Position: refs/heads/master@{#339703}