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As part of the OOPR-Canvas2D project this CL changes IsGpuContextLost()
to query RasterInterface instead of the current GLES2Interface. This is
done with the goal of removing all references to the GLES2Interface in
Canvas2D code so that we can fully transition to RasterInterface for
oop-r.

Change-Id: Ib740d7f3554493e31429dd60e42198095a4c746b
Bug: 1018898
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1877109Reviewed-by: Khushal <khushalsagar@chromium.org>
Reviewed-by: Daniel Cheng <dcheng@chromium.org>
Commit-Queue: Nathan Zabriskie <nazabris@microsoft.com>
Cr-Commit-Position: refs/heads/master@{#711009}