Theme the NTP attribution text
Theme the NTP attribution text

BUG=20262
TEST=Verify that the attribution 'theme created by' text matches the title color under the thumbnails

Review URL: http://codereview.chromium.org/173409

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@24370 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser