Merge MediaControlsChromium into MediaControls (2nd try)

Source/core/html/shadow/MediaControls.h

Index: Source/core/html/shadow/MediaControls.h
diff --git a/Source/core/html/shadow/MediaControls.h b/Source/core/html/shadow/MediaControls.h
index fb3a6d940943d32bff101becc2d36cdd610a0ff5..f69bb9d0c743fc80a830b15efe80f440353652b4 100644
--- a/Source/core/html/shadow/MediaControls.h
+++ b/Source/core/html/shadow/MediaControls.h
@@ -41,13 +41,10 @@ class MediaPlayer;
 class RenderBox;
 class RenderMedia;
 
-// An abstract class with the media control elements that all ports support.
 class MediaControls : public HTMLDivElement {
-  public:
+public:
     virtual ~MediaControls() {}
 
-    // This function is to be implemented in your port-specific media
-    // controls implementation since it will return a child instance.
     static PassRefPtr<MediaControls> create(Document&);
 
     virtual void setMediaController(MediaControllerInterface*);
@@ -66,7 +63,7 @@ class MediaControls : public HTMLDivElement {
     virtual void playbackStopped();
 
     virtual void updateStatusDisplay() { };
-    virtual void updateCurrentTimeDisplay() = 0;
+    virtual void updateCurrentTimeDisplay();
     virtual void showVolumeSlider();
 
     virtual void changedMute();
@@ -89,10 +86,13 @@ class MediaControls : public HTMLDivElement {
     virtual void showTextTrackDisplay();
     virtual void hideTextTrackDisplay();
     virtual void updateTextTrackDisplay();
+    virtual void insertTextTrackContainer(PassRefPtr<MediaControlTextTrackContainerElement>);
 
 protected:
     explicit MediaControls(Document&);
 
+    virtual bool initializeControls(Document&);
+
     virtual void defaultEventHandler(Event*) OVERRIDE;
 
     bool containsRelatedTarget(Event*);
@@ -122,6 +122,9 @@ private:
     virtual bool isMediaControls() const OVERRIDE FINAL { return true; }
 
     virtual const AtomicString& shadowPseudoId() const OVERRIDE;
+
+    MediaControlTimeRemainingDisplayElement* m_durationDisplay;
+    MediaControlPanelEnclosureElement* m_enclosure;
 };
 
 DEFINE_NODE_TYPE_CASTS(MediaControls, isMediaControls());