GitLab

Essentially the same fix as http://crrev.com/44709.

BUG=140177
TEST=Select text in a notification and verify it to be highlighted.

Review URL: https://chromiumcodereview.appspot.com/10825150

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@150236 0039d316-1c4b-4281-b951-d872f2087c98