Fix template angle bracket syntax in platform

Source/platform/exported/WebMediaStreamSource.cpp

 /*
  * Copyright (C) 2011 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 204 matching lines @@
     ASSERT(!m_private.isNull() && consumer);
 
     m_private->addAudioConsumer(ConsumerWrapper::create(consumer));
 }
 
 bool WebMediaStreamSource::removeAudioConsumer(WebAudioDestinationConsumer* consumer)
 {
     ASSERT(isMainThread());
     ASSERT(!m_private.isNull() && consumer);
 
-    const HeapHashSet<Member<AudioDestinationConsumer> >& consumers = m_private->audioConsumers();
-    for (HeapHashSet<Member<AudioDestinationConsumer> >::const_iterator it = consumers.begin(); it != consumers.end(); ++it) {
+    const HeapHashSet<Member<AudioDestinationConsumer>>& consumers = m_private->audioConsumers();
+    for (HeapHashSet<Member<AudioDestinationConsumer>>::const_iterator it = consumers.begin(); it != consumers.end(); ++it) {
         ConsumerWrapper* wrapper = static_cast<ConsumerWrapper*>(it->get());
         if (wrapper->consumer() == consumer) {
             m_private->removeAudioConsumer(wrapper);
             return true;
         }
     }
     return false;
 }
 
 } // namespace blink