GitLab

 Clicking keyboard (and any popup like menu) was activating the widget, which
 hides VirtualKeyboard as it was stealing focus from browser window.

 This also moves the code that handles window activation to WindowManaer.

 Removed desktop_window_root_view.cc|h as it's no longer necesssary.

BUG=none
TEST=VirtualKeyboard on views desktop should work.

Review URL: http://codereview.chromium.org/7740039

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@98472 0039d316-1c4b-4281-b951-d872f2087c98