bookmarks: Convert ProfileImpl to use BaseBookmarkModelObserver.

That way we can remove the usage of chrome::NOTIFICATION_BOOKMARK_MODEL_LOADED,
and just register it using BookmarkModel::AddObserver/RemoveObserver API.

BUG=144783
R=sky@chromium.org,sail@chromium.org


Review URL: https://chromiumcodereview.appspot.com/12077006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@179101 0039d316-1c4b-4281-b951-d872f2087c98
1 file changed