GitLab

There's a weird split of responsibility between RenderWidgetHostImpl
and RenderWidgetHostViewBase, both of which are used for all platforms.
This merges some responsibility up to RenderWidgetHostImpl for the
OnRenderFrameMetadataChangedAfterActivation() event.

R=avi@chromium.org

Change-Id: I2349391493b1bb1e71393c5a7bb34e931d650527
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2392620
Commit-Queue: danakj <danakj@chromium.org>
Reviewed-by: Avi Drissman <avi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#804352}