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This adds base functionality of UI for ARC graphic buffers
visualization tools. It provides.
  * UI to start graphic buffer tracing
  * UI to show captured model.
  * Show top level Chrome and Android Graphics events
  * Show graphic buffers events grouped per view.
  * Each events band is expandable/collapsible.
  * Tooltip automatically pops up to describe content under the mouse.
This is kept behind the flag and not localized once not targeted to M73.

BUG=b:122555793
TEST=Locally

Change-Id: Ib285fbe9be6245cb2cb88cabbf11a07d28269c30
Reviewed-on: https://chromium-review.googlesource.com/c/1436135
Auto-Submit: Yury Khmel <khmel@chromium.org>
Reviewed-by: Avi Drissman <avi@chromium.org>
Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Reviewed-by: Yusuke Sato <yusukes@chromium.org>
Commit-Queue: Yury Khmel <khmel@chromium.org>
Cr-Commit-Position: refs/heads/master@{#627041}