Handler settings page.
This change implements a settings page that allows users to manage protocol
handlers registered via navigator.registerProtocolHandler.
tony: could you review the ProtocolHandlerRegistry stuff?
estade: could you review the webui stuff?
Thanks!
TEST=Unit tests provided.
Review URL: http://codereview.chromium.org/7033018
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@86762 0039d316-1c4b-4281-b951-d872f2087c98
23 files changed
