GitLab

views-desktop: Add the desktop-window as an observer for a widget when it gets added to the desktop.

This fixes sending keyboard events to the browser in views-desktop.

TBR=sky@chromium.org
BUG=none
TEST=none

Review URL: http://codereview.chromium.org/7604024

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@96126 0039d316-1c4b-4281-b951-d872f2087c98