GitLab

In Viz, PageHandler will no longer know that a CompositorFrame has been submitted.
This CL makes use of FrameSinkVideoCapturerImpl for screencasting, so that PageHandler
doesn't need to rely on knowing about CompositorFrame submissions.

Some information from CompositorFrameMetadata is required for screencasting. This is
sent to PageHandler by FrameSinkVideoCapturerImpl along with each frame.

Cq-Include-Trybots: luci.chromium.try:android_optional_gpu_tests_rel
Change-Id: Ie7a191944579bb7f6dda0e5384e5955764c24850
Reviewed-on: https://chromium-review.googlesource.com/969711
Commit-Queue: Jonathan Ross <jonross@chromium.org>
Reviewed-by: Xiaohan Wang <xhwang@chromium.org>
Reviewed-by: Jonathan Ross <jonross@chromium.org>
Reviewed-by: Dmitry Gozman <dgozman@chromium.org>
Reviewed-by: Yuri Wiitala <miu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#550444}