Shifted patterns in tabs and background pattern over so that patterns line up correctly with the

browser window.

BUG=18548
TEST=Open window with Legal Pad theme from the them gallery and make sure the red lines line up.

Review URL: http://codereview.chromium.org/351010

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@30998 0039d316-1c4b-4281-b951-d872f2087c98