Add new "resize" event to HTMLMediaElement.

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 653309e1e71a08147f68a34a0213724ad9cb8284..1ef1bf25bf4779689b5206f57eae3edf9740015c 100644
--- a/LayoutTests/media/video-frame-size-change.html
+++ b/LayoutTests/media/video-frame-size-change.html
@@ -17,6 +17,18 @@
                 video.src = "resources/frame_size_change.webm";
                 video_fixed_size.src = "resources/frame_size_change.webm";
 
+                // Expect no resize event because the tag's size (the frames'
+                // "natural size") doesn't change, only the internal resolution
+                // does.  Fail if this expectation is violated.
+                video.addEventListener('resize', onresize);
+                video_fixed_size.addEventListener('resize', onresize);
+                function onresize() {

[acolwell GONE FROM CHROMIUM, 2013/12/13 15:58:12]

nit: { is supposed to be on the next line. Could you please fix all the other
instances of a function's opening { being on the same line in this file while
you are in here please.

[Ami GONE FROM CHROMIUM, 2013/12/13 17:48:43]

Done.

+                    document.body.appendChild(document.createTextNode('FAIL: unexpected resize'));
+                    if (window.testRunner) {
+                        testRunner.notifyDone();
+                    }
+                }
+
                 var canplayCount = 0;
                 function oncanplay() {
                     if (++canplayCount < 2) {