Ensure that we capture all paths for starting activity for result

-> AppWidgetManagerCompatVL uses an IntentSender to launch the widget
   config activity (to handle the case of cross profile config activities)
-> Launcher was not overriding this method, and so not capturing the fact
   that we are waiting for a result.

issue 19723510

Change-Id: If5751e6d23d31c9f7b3b85f9464a93f935487cec