Change method of activity tracking done in ActivityStatus.

Use the ability to track activity changes by registering a listener on
the application.

Also, this will manage the state of various activities on the java side.

BUG=286071

Review URL: https://chromiumcodereview.appspot.com/23522032

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@223437 0039d316-1c4b-4281-b951-d872f2087c98


CrOS-Libchrome-Original-Commit: 8b330900127e87bd2e46cce9cf5107251dcf5f6a
3 files changed
tree: 58b29cfeab50444263cbe7230ec5997147ba77c4
  1. base/
  2. build/
  3. components/
  4. dbus/
  5. ipc/
  6. mojo/
  7. testing/
  8. third_party/
  9. ui/