GitLab

BUG=135179
TEST=Run chrome with --force-device-scale-factor=2 and ensure that high DPI images are used on these pages (i.e. the logo on chrome://chrome/help/)


Review URL: https://chromiumcodereview.appspot.com/10830051

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@148804 0039d316-1c4b-4281-b951-d872f2087c98