This adds a new pixel test temporarily to fast/harness to test the 
tryserver and CQ's handling of binary patches.

TBR=leviw@chromium.org, iannucci@chromium.org
BUG=23608

Review URL: https://chromiumcodereview.appspot.com/23601028

git-svn-id: svn://svn.chromium.org/blink/trunk@157638 bbb929c8-8fbe-4397-9dbb-9b2b20218538