GitLab

Bottom control positioning depends on knowing the surface size, but is
not informed of surface size changes.

This CL adds the bottom controls as a listener on ContentViewRenderView.
Also query java for the controls offset.

Bug: 1091717
Change-Id: I2c1ec6be7d1dd470e21590c66b09b4f99dbfe5c5
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2232753Reviewed-by: Scott Violet <sky@chromium.org>
Commit-Queue: Bo <boliu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#775796}