GitLab

The event flow was migrated to ViewAndroid. This CL removes
the remaining handler, and moves the post-event task in
ContentViewCore.onSizeChanged to ImeAdapterAndroid/PopupZoomer.

Bug: 622847
Change-Id: I1814d435365a3aa0f7685b26c860cf56e2856a9a
Reviewed-on: https://chromium-review.googlesource.com/784731
Commit-Queue: Jinsuk Kim <jinsukkim@chromium.org>
Reviewed-by: Bo <boliu@chromium.org>
Reviewed-by: Michael Thiessen <mthiesse@chromium.org>
Reviewed-by: Ted Choc <tedchoc@chromium.org>
Cr-Commit-Position: refs/heads/master@{#522351}