[Blink, RemotePlayback] Reject the prompt() with OperationError if there's a pending promise for th…

third_party/WebKit/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 2183 matching lines @@
         scheduleTimeupdateEvent(false);
         scheduleEvent(EventTypeNames::pause);
         scheduleRejectPlayPromises(AbortError);
     }
 
     updatePlayState();
 }
 
 void HTMLMediaElement::requestRemotePlayback()
 {
-    DCHECK(m_remoteRoutesAvailable);
-    webMediaPlayer()->requestRemotePlayback();
+    if (webMediaPlayer())
+        webMediaPlayer()->requestRemotePlayback();
 }
 
 void HTMLMediaElement::requestRemotePlaybackControl()
 {
-    DCHECK(m_remoteRoutesAvailable);
-    webMediaPlayer()->requestRemotePlaybackControl();
+    if (webMediaPlayer())
+        webMediaPlayer()->requestRemotePlaybackControl();
 }
 
 void HTMLMediaElement::closeMediaSource()
 {
     if (!m_mediaSource)
         return;
 
     m_mediaSource->close();
     m_mediaSource = nullptr;
 }
@@ skipping 1805 matching lines @@
 
 IntRect HTMLMediaElement::AutoplayHelperClientImpl::absoluteBoundingBoxRect() const
 {
     IntRect result;
     if (LayoutObject* object = m_element->layoutObject())
         result = object->absoluteBoundingBoxRect();
     return result;
 }
 
 } // namespace blink