Fix BaseAudioContext::hasPendingActivity() to make it GCed correctly

third_party/WebKit/Source/modules/webaudio/BaseAudioContext.cpp

 /*
  * Copyright (C) 2010, 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 195 matching lines @@
     clear();
 }
 
 void BaseAudioContext::stop()
 {
     uninitialize();
 }
 
 bool BaseAudioContext::hasPendingActivity() const
 {
-    // There's no pending activity if the audio context has been cleared.
-    return !m_isCleared;
+    // If the destination node (handler) has any active connection and the audio
+    // graph needs to be rendered, we mark the context as 'hasPendingActivity'.
+    // This keeps this node from getting GCed.
+    return destination()->hasConnection();
 }
 
 AudioDestinationNode* BaseAudioContext::destination() const
 {
     // Cannot be called from the audio thread because this method touches objects managed by Oilpan,
     // and the audio thread is not managed by Oilpan.
     DCHECK(!isAudioThread());
     return m_destinationNode;
 }
 
@@ skipping 603 matching lines @@
 
 SecurityOrigin* BaseAudioContext::getSecurityOrigin() const
 {
     if (getExecutionContext())
         return getExecutionContext()->getSecurityOrigin();
 
     return nullptr;
 }
 
 } // namespace blink