Minor changes to the system keyboard. Makes arrow keys repeat, and removes the power key.


BUG=297772

Review URL: https://codereview.chromium.org/40333002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@230757 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 230757