Try to fix a performance regression

See bug report for details - try putting the early return back where it
was to fix the regression.

Regression was caused by r157004 aka https://chromiumcodereview.appspot.com/23737004

BUG=283893
R=ojan@chromium.org

Review URL: https://chromiumcodereview.appspot.com/23636009

git-svn-id: svn://svn.chromium.org/blink/trunk@157326 bbb929c8-8fbe-4397-9dbb-9b2b20218538