New media playback UI.

Source/core/layout/LayoutObject.cpp

Index: Source/core/layout/LayoutObject.cpp
diff --git a/Source/core/layout/LayoutObject.cpp b/Source/core/layout/LayoutObject.cpp
index f67bca0631ff94563576be00bda7d018b589c77a..ce990606bf7180a9571f1ae15782eb809d0ede86 100644
--- a/Source/core/layout/LayoutObject.cpp
+++ b/Source/core/layout/LayoutObject.cpp
@@ -36,6 +36,8 @@
 #include "core/editing/EditingBoundary.h"
 #include "core/editing/FrameSelection.h"
 #include "core/editing/htmlediting.h"
+#include "core/events/Event.h"
+#include "core/events/EventQueue.h"
 #include "core/fetch/ResourceLoadPriorityOptimizer.h"
 #include "core/fetch/ResourceLoader.h"
 #include "core/frame/DeprecatedScheduleStyleRecalcDuringLayout.h"
@@ -1822,6 +1824,15 @@ void LayoutObject::setStyle(PassRefPtr<ComputedStyle> style)
         setShouldDoFullPaintInvalidationIncludingNonCompositingDescendants();
     else if (diff.needsPaintInvalidationObject() || updatedDiff.needsPaintInvalidationObject())
         setShouldDoFullPaintInvalidation();
+
+    // Dispatch a resize event to our owning node if requested.
+    if (m_bitfields.sendResizeEvent() && m_node) {

[fs, 2015/07/08 09:31:00]

I think it would be better just put this mechanism within MediaControls (using a
zero-delay Timer). The actual size-changes for MediaControls will be constrained
to the setWidth/setHeight calls in LayoutMedia::layout.

[liberato (no reviews please), 2015/07/09 12:10:56]

thanks!  I added a call to LayoutMedia::layout() to notify MediaControls. 
MediaControl sets a zero-delay timer, as you suggest.

+        RefPtrWillBeRawPtr<Event> event = Event::create(EventTypeNames::resize);
+        event->setTarget(m_node);
+        LocalDOMWindow* win = document().executingWindow();
+        if (win)
+            win->eventQueue()->enqueueEvent(event);
+    }
 }
 
 static inline bool layoutObjectHasBackground(const LayoutObject* layoutObject)