Inline Updates - Add the real flow.

This adds real support for inline updates from Play.  This hooks up the
AppUpdateManager Play class to Chrome's InlineUpdateController and
UpdateStateProvider.

play core library that are required to support inline updates.

Binary-Size: This cl brings in the minimal set of new classes from the
Bug: 922714
Change-Id: I1ba932a97502472af956471d8d58c87645a966f7
Reviewed-on: https://chromium-review.googlesource.com/c/1468801
Commit-Queue: Tommy Nyquist <nyquist@chromium.org>
Commit-Queue: David Trainor <dtrainor@chromium.org>
Reviewed-by: Tommy Nyquist <nyquist@chromium.org>
Cr-Commit-Position: refs/heads/master@{#632780}
3 files changed