This also makes a couple of changes to the framework:
1. ShareActionProvider - Use edit mode to execute activity chooser code.
2. ActionBarImpl - add a new constructor for use by layoutlib.
This also relies on some changes to the plugin to pass the correct params.
Change-Id: Ia30fef816afd91ec1e439734d56b59b1323bfee2
(cherry-picked from fe38489f6734fefd0a216e9cfe12f8f978ff371f)
43b15371f9