New media playback UI.

Source/core/layout/LayoutMedia.cpp

Index: Source/core/layout/LayoutMedia.cpp
diff --git a/Source/core/layout/LayoutMedia.cpp b/Source/core/layout/LayoutMedia.cpp
index 4252f34ed465c03f4221acd4226e8008fc5c8436..13358362ad901a37c7bf5d724791ffcd5cac2599 100644
--- a/Source/core/layout/LayoutMedia.cpp
+++ b/Source/core/layout/LayoutMedia.cpp
@@ -28,6 +28,7 @@
 #include "core/layout/LayoutMedia.h"
 
 #include "core/html/HTMLMediaElement.h"
+#include "core/html/shadow/MediaControls.h"
 #include "core/layout/LayoutView.h"
 
 namespace blink {
@@ -87,6 +88,10 @@ void LayoutMedia::layout()
     }
 
     clearNeedsLayout();
+
+    // Notify our MediaControls that a layout has happened.
+    if (mediaElement() && mediaElement()->mediaControls() && newSize.width() != oldSize.width())
+        mediaElement()->mediaControls()->notifyPanelWidthChanged(newSize.width().toInt());

[philipj_slow, 2015/07/21 12:02:21]

Is there any particular reason to convert to int here instead of passing a
LayoutUnit? It wouldn't make much of a difference, but would make it more
explicit in the media controls code that this comes from layout, and make it
harder to update it from offsetWidth() or similar.

[liberato (no reviews please), 2015/07/27 20:26:09]

Done.

 }
 
 bool LayoutMedia::isChildAllowed(LayoutObject* child, const ComputedStyle&) const