android: Improve ActivityStatus and add ChromiumActivity.
The ActivityStatus class used to track activity state changes is too basic
for some usage scenarios.
This patch does the following:
- Augment ActivityStatus with a new StateListener type that can be
registered to listen to all activity state changes.
Also add getActivity(), getState(), registerStateListener()
and unregisterStateListener() as static method.
- Add a new ChromiumActivity class that all Chromium main activities
should sub-class, to ensure that the ActivityStatus state is updated
appropriately.
- Modify all main activities in the Chromium code base to extend
from ChromiumActivity instead of Activity.
BUG=none
Review URL: https://chromiumcodereview.appspot.com/11419287
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@171789 0039d316-1c4b-4281-b951-d872f2087c98
8 files changed
