If the media controls are visible they should always grab clicks

Source/core/html/shadow/MediaControlElements.h

 /*
  * Copyright (C) 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 36 matching lines @@
 
 private:
     explicit MediaControlPanelElement(MediaControls&);
 
     virtual const AtomicString& shadowPseudoId() const OVERRIDE;
     virtual void defaultEventHandler(Event*) OVERRIDE;
 
     void startTimer();
     void stopTimer();
     void transitionTimerFired(Timer<MediaControlPanelElement>*);
+    virtual bool keepEventInNode(Event*) OVERRIDE;
 
     bool m_isDisplayed;
     bool m_opaque;
 
     Timer<MediaControlPanelElement> m_transitionTimer;
 };
 
 // ----------------------------
 
 class MediaControlPanelEnclosureElement FINAL : public MediaControlDivElement {
@@ skipping 54 matching lines @@
 public:
     static PassRefPtrWillBeRawPtr<MediaControlOverlayPlayButtonElement> create(MediaControls&);
 
     virtual void updateDisplayType() OVERRIDE;
 
 private:
     explicit MediaControlOverlayPlayButtonElement(MediaControls&);
 
     virtual const AtomicString& shadowPseudoId() const OVERRIDE;
     virtual void defaultEventHandler(Event*) OVERRIDE;
+    virtual bool keepEventInNode(Event*) OVERRIDE;
 };
 
 // ----------------------------
 
 class MediaControlToggleClosedCaptionsButtonElement FINAL : public MediaControlInputElement {
 public:
     static PassRefPtrWillBeRawPtr<MediaControlToggleClosedCaptionsButtonElement> create(MediaControls&);
 
     virtual bool willRespondToMouseClickEvents() OVERRIDE { return true; }
 
@@ skipping 17 matching lines @@
     // FIXME: An "earliest possible position" will be needed once that concept
     // is supported by HTMLMediaElement, see https://crbug.com/137275
     void setPosition(double);
     void setDuration(double);
 
 private:
     explicit MediaControlTimelineElement(MediaControls&);
 
     virtual const AtomicString& shadowPseudoId() const OVERRIDE;
     virtual void defaultEventHandler(Event*) OVERRIDE;
+    virtual bool keepEventInNode(Event*) OVERRIDE;
 };
 
 // ----------------------------
 
 class MediaControlFullscreenButtonElement FINAL : public MediaControlInputElement {
 public:
     static PassRefPtrWillBeRawPtr<MediaControlFullscreenButtonElement> create(MediaControls&);
 
     virtual bool willRespondToMouseClickEvents() OVERRIDE { return true; }
 
@@ skipping 14 matching lines @@
 
     virtual bool willRespondToMouseMoveEvents() OVERRIDE;
     virtual bool willRespondToMouseClickEvents() OVERRIDE;
     void setVolume(double);
 
 private:
     explicit MediaControlVolumeSliderElement(MediaControls&);
 
     virtual const AtomicString& shadowPseudoId() const OVERRIDE;
     virtual void defaultEventHandler(Event*) OVERRIDE;
+    virtual bool keepEventInNode(Event*) OVERRIDE;
 };
 
 // ----------------------------
 
 class MediaControlTimeRemainingDisplayElement FINAL : public MediaControlTimeDisplayElement {
 public:
     static PassRefPtrWillBeRawPtr<MediaControlTimeRemainingDisplayElement> create(MediaControls&);
 
 private:
     explicit MediaControlTimeRemainingDisplayElement(MediaControls&);
@@ skipping 28 matching lines @@
     virtual RenderObject* createRenderer(RenderStyle*) OVERRIDE;
 
     IntRect m_videoDisplaySize;
     float m_fontSize;
 };
 
 
 } // namespace blink
 
 #endif // MediaControlElements_h