GitLab

- Change how BOOKMARK_BAR_VISIBILITY_PREF_CHANGED is handled because it broke interaction w/ incognito windows.
- Make SIDEBAR_CHANGED listen only to a certain SidebarManager instance.
- Mark COOKIE_CHANGED as ok to listen to AllSources().

BUG=87457, 92506
TEST=none

Review URL: http://codereview.chromium.org/7610003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@96440 0039d316-1c4b-4281-b951-d872f2087c98