Add a new immediate-invoke public method to the web intents controller.

This method is used by explicit intents and can be used by other
services doing their own picker.

R=groby@chromium.org
BUG=None


Review URL: https://chromiumcodereview.appspot.com/11088018

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@161514 0039d316-1c4b-4281-b951-d872f2087c98
12 files changed