Media Controls: use loadedmetadata and error events.

third_party/WebKit/Source/core/html/shadow/MediaControls.cpp

 /*
  * Copyright (C) 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2011, 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.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 730 matching lines @@
 
 void MediaControls::onTextTracksAddedOrRemoved() {
   m_toggleClosedCaptionsButton->setIsWanted(mediaElement().hasClosedCaptions());
   BatchedControlUpdate batch(this);
 }
 
 void MediaControls::onTextTracksChanged() {
   m_toggleClosedCaptionsButton->updateDisplayType();
 }
 
+void MediaControls::onError() {
+  // TODO(mlamouri): we should only change the aspects of the control that need
+  // to be changed.
+  reset();
+}
+
+void MediaControls::onLoadedMetadata() {
+  // TODO(mlamouri): we should only change the aspects of the control that need
+  // to be changed.
+  reset();
+}
+
 void MediaControls::notifyPanelWidthChanged(const LayoutUnit& newWidth) {
   // Don't bother to do any work if this matches the most recent panel
   // width, since we're called after layout.
   // Note that this code permits a bad frame on resize, since it is
   // run after the relayout / paint happens.  It would be great to improve
   // this, but it would be even greater to move this code entirely to
   // JS and fix it there.
   m_panelWidth = newWidth.toInt();
 
   // Adjust for effective zoom.
@@ skipping 178 matching lines @@
   visitor->trace(m_overflowList);
   visitor->trace(m_castButton);
   visitor->trace(m_overlayCastButton);
   visitor->trace(m_mediaEventListener);
   visitor->trace(m_windowEventListener);
   visitor->trace(m_orientationLockDelegate);
   HTMLDivElement::trace(visitor);
 }
 
 }  // namespace blink