--- a/dom/html/HTMLMediaElement.cpp
+++ b/dom/html/HTMLMediaElement.cpp
@@ -3616,19 +3616,16 @@ HTMLMediaElement::PlayInternal()
   mAutoplaying = false;
 
   // We changed mPaused and mAutoplaying which can affect AddRemoveSelfReference
   // and our preload status.
   AddRemoveSelfReference();
   UpdatePreloadAction();
   UpdateSrcMediaStreamPlaying();
 
-  // We should check audio channel playing state before dispatching any events,
-  // because we don't want to dispatch events for blocked media. For blocked
-  // media, the event would be pending until media is resumed.
   // TODO: If the playback has ended, then the user agent must set
   // seek to the effective start.
   if (oldPaused) {
     DispatchAsyncEvent(NS_LITERAL_STRING("play"));
     switch (mReadyState) {
     case nsIDOMHTMLMediaElement::HAVE_NOTHING:
       DispatchAsyncEvent(NS_LITERAL_STRING("waiting"));
       break;