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This CL adds HardwareRendererViz as part of implementation of
'Viz for WebView' path. HardwareRendererViz responsible for submitting
root CompositorFrames.

Bug: 805739
Change-Id: If5b57c39e3d625286248598f23aaa29a9ab55025
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1863136
Commit-Queue: Vasiliy Telezhnikov <vasilyt@chromium.org>
Reviewed-by: Bo <boliu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#708169}