Create the skeleton of a new FocusController in corewm.
This code will:
- implement the API handling focus and activation changes.
- respond to events or window disposition changes with focus and activation changes.
- dispatch focus and activation changes as events.

http://crbug.com/162100
R=sky@chromium.org
Review URL: https://codereview.chromium.org/11414090

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@168882 0039d316-1c4b-4281-b951-d872f2087c98
9 files changed