Media Controls: handle 'timeupdate', 'play' and 'pause' via an EventListener.

third_party/WebKit/Source/core/html/HTMLMediaElement.cpp

Index: third_party/WebKit/Source/core/html/HTMLMediaElement.cpp
diff --git a/third_party/WebKit/Source/core/html/HTMLMediaElement.cpp b/third_party/WebKit/Source/core/html/HTMLMediaElement.cpp
index 833fef54fe0611793710a84245bee3cf1008c16a..ffa3497917e492c92590259af75b85f4cf7e651a 100644
--- a/third_party/WebKit/Source/core/html/HTMLMediaElement.cpp
+++ b/third_party/WebKit/Source/core/html/HTMLMediaElement.cpp
@@ -2512,9 +2512,6 @@ void HTMLMediaElement::playbackProgressTimerFired(TimerBase*) {
   if (!playbackRate())
     return;
 
-  if (!m_paused && mediaControls())

[whywhat, 2016/11/15 02:51:08]

This seems to only be called when !m_paused but scheduleTimeupdateEvent is
called if !m_seeking. Are you sure this is okay? :)

-    mediaControls()->playbackProgressed();
-
   cueTimeline().updateActiveCues(currentTime());
 }
 
@@ -3326,11 +3323,8 @@ void HTMLMediaElement::updatePlayState() {
       m_autoplayHelper->playbackStarted();
     }
 
-    if (mediaControls())
-      mediaControls()->playbackStarted();
     startPlaybackProgressTimer();
     m_playing = true;
-
   } else {  // Should not be playing right now
     if (isPlaying) {
       webMediaPlayer()->pause();
@@ -3342,9 +3336,6 @@ void HTMLMediaElement::updatePlayState() {
     double time = currentTime();
     if (time > m_lastSeekTime)
       addPlayedRange(m_lastSeekTime, time);
-
-    if (mediaControls())
-      mediaControls()->playbackStopped();
   }
 
   if (layoutObject())