Move some non-event related functionality from RootWindow onto RootWindowHost.

- Transform logic
- Compositor

R=sky@chromium.org
http://crbug.com/308843

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=236017

Review URL: https://codereview.chromium.org/70103020

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@241929 0039d316-1c4b-4281-b951-d872f2087c98
This CL makes sure that the credentials that are displayed in the ManagePasswordsBubble are updated.

BUG=261628

Review URL: https://codereview.chromium.org/99813002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@241930 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 241930