Android OOP-D: Re-land Fix CursorAnchorInfoController updates

This change adds a RequestForceSendMetadata method to
LayerTreeView/Host/Impl, which allows us to force sending RFM with
the next frame.

This ensures that CursorAnchorInfoController receives updates on any
frame with a text change.

Bug: 912309
Change-Id: I21185b57c2937c94d306d4ceed239d2f49bc824d
Reviewed-on: https://chromium-review.googlesource.com/c/1383533
Reviewed-by: Saman Sami <samans@chromium.org>
Commit-Queue: Eric Karl <ericrk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#618643}
15 files changed