Pixel tests fail all over the place on OS X 10.10 because the generated results are 1600x1200 instead of 800x600. Bots don't catch this, because they don't have Retina screens. rdar://problem/19179429
Created attachment 243648 [details] proposed fix
Comment on attachment 243648 [details] proposed fix Looks like this isn't right, I'm told that hidpi tests on Yosemite become broken.
*** Bug 140125 has been marked as a duplicate of this bug. ***
Created attachment 244176 [details] proposed patch
Committed <http://trac.webkit.org/r178146>.