GitLab

Browser controls are accessible if the browser controls are not hidden
before the tab modal javascript dialog is shown. The app modal dialog
is also using the same dialog view now for consistency.

Bug: 687010
Change-Id: I6f36e8ef06129dd220d75d08878480672993fc72
Reviewed-on: https://chromium-review.googlesource.com/757166
Commit-Queue: Becky Zhou <huayinz@chromium.org>
Reviewed-by: Ted Choc (back but slow, ping me) <tedchoc@chromium.org>
Reviewed-by: Theresa <twellington@chromium.org>
Cr-Commit-Position: refs/heads/master@{#526726}