Fix template angle bracket syntax in platform

Source/platform/audio/AudioBus.h

 /*
  * 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
@@ skipping 140 matching lines @@
 
     AudioBus(unsigned numberOfChannels, size_t length, bool allocate);
 
     void speakersCopyFrom(const AudioBus&);
     void discreteCopyFrom(const AudioBus&);
     void speakersSumFrom(const AudioBus&);
     void discreteSumFrom(const AudioBus&);
     void speakersSumFrom5_1_ToMono(const AudioBus&);
 
     size_t m_length;
-    Vector<OwnPtr<AudioChannel> > m_channels;
+    Vector<OwnPtr<AudioChannel>> m_channels;
     int m_layout;
     float m_busGain;
     OwnPtr<AudioFloatArray> m_dezipperGainValues;
     bool m_isFirstTime;
     float m_sampleRate; // 0.0 if unknown or N/A
 };
 
 } // namespace blink
 
 #endif // AudioBus_h