Fire canplaythrough after play and playing when autoplaying

Source/core/html/HTMLMediaElement.cpp

 /*
  * Copyright (C) 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 1589 matching lines @@
 
     bool isPotentiallyPlaying = potentiallyPlaying();
     if (m_readyState == HAVE_FUTURE_DATA && oldState <= HAVE_CURRENT_DATA && tracksAreReady) {
         scheduleEvent(EventTypeNames::canplay);
         if (isPotentiallyPlaying)
             scheduleEvent(EventTypeNames::playing);
         shouldUpdateDisplayState = true;
     }
 
     if (m_readyState == HAVE_ENOUGH_DATA && oldState < HAVE_ENOUGH_DATA && tracksAreReady) {
-        if (oldState <= HAVE_CURRENT_DATA)
+        if (oldState <= HAVE_CURRENT_DATA) {
             scheduleEvent(EventTypeNames::canplay);
-
-        scheduleEvent(EventTypeNames::canplaythrough);
-
-        if (isPotentiallyPlaying && oldState <= HAVE_CURRENT_DATA)
-            scheduleEvent(EventTypeNames::playing);
+            if (isPotentiallyPlaying)
+                scheduleEvent(EventTypeNames::playing);
+        }
 
         if (m_autoplaying && m_paused && autoplay() && !document().isSandboxed(SandboxAutomaticFeatures) && !userGestureRequiredForPlay()) {
             m_paused = false;
             invalidateCachedTime();
             scheduleEvent(EventTypeNames::play);
             scheduleEvent(EventTypeNames::playing);
         }
 
+        scheduleEvent(EventTypeNames::canplaythrough);
+
         shouldUpdateDisplayState = true;
     }
 
     if (shouldUpdateDisplayState) {
         updateDisplayState();
         if (hasMediaControls())
             mediaControls()->refreshClosedCaptionsButtonVisibility();
     }
 
     updatePlayState();
@@ skipping 2285 matching lines @@
 {
     m_mediaSource->setWebMediaSourceAndOpen(adoptPtr(webMediaSource));
 }
 
 bool HTMLMediaElement::isInteractiveContent() const
 {
     return fastHasAttribute(controlsAttr);
 }
 
 }