Remove display() from more layout tests

LayoutTests/media/video-frame-size-change.html

Index: LayoutTests/media/video-frame-size-change.html
diff --git a/LayoutTests/media/video-frame-size-change.html b/LayoutTests/media/video-frame-size-change.html
index ae4513f62176f8c276200486bebddd3a86d1b76f..99dfa495f835bbe7060ed761ddcecae43c88bcc9 100644
--- a/LayoutTests/media/video-frame-size-change.html
+++ b/LayoutTests/media/video-frame-size-change.html
@@ -5,7 +5,7 @@
         as opposed to changing the size of the element.</p>
         <video width="320"></video>
         <video></video>
-
+        <script src="../resources/run-after-display.js"></script>
         <script>
             if (window.testRunner) {
                 testRunner.waitUntilDone();
@@ -49,15 +49,12 @@
                         }
                     }
 
-                    // Make sure we render the first frame.
-                    if (window.testRunner) {
-                        testRunner.display();
-                    }
-
-                    video.play();
-                    video_fixed_size.play();
-                    video.removeEventListener('canplay', oncanplay);
-                    video_fixed_size.removeEventListener('canplay', oncanplay);
+                    runAfterDisplay(function() {

[scherkus (not reviewing), 2014/03/19 20:20:35]

some notes on this test as I was the one who wrote it:

this test did want to run painting *before* playing the video to make sure that
our blink/media/gfx code handles frame size changes (otherwise we only end up
painting the final frame of the video, which would be as if the video didn't
have any frame size changes)

will rAD() (which uses rAF()) still provide the same coverage?

[enne (OOO), 2014/03/19 20:22:34]

The frame size changes happen during painting and not during layout?

+                       video.play();
+                       video_fixed_size.play();
+                       video.removeEventListener('canplay', oncanplay);
+                       video_fixed_size.removeEventListener('canplay', oncanplay);
+                    });
                 };
                 video.addEventListener('canplay', oncanplay);
                 video_fixed_size.addEventListener('canplay', oncanplay);