rAc: Focus first invalid view when trying to submit.

R=sky@chromium.org
BUG=260411

Review URL: https://codereview.chromium.org/35343005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@230601 0039d316-1c4b-4281-b951-d872f2087c98
Add arrows to the system keyboard.

BUG=297768

Review URL: https://codereview.chromium.org/36063002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@230602 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 230602