[part 2] Make classes and structures in modules fast-allocated.

Source/modules/webaudio/AudioNodeInput.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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 10 matching lines @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef AudioNodeInput_h
 #define AudioNodeInput_h
 
 #include "modules/webaudio/AudioNode.h"
 #include "modules/webaudio/AudioSummingJunction.h"
 #include "platform/audio/AudioBus.h"
+#include "wtf/FastAllocBase.h"
 #include "wtf/HashSet.h"
 
 namespace blink {
 
 class AudioNodeOutput;
 
 // An AudioNodeInput represents an input to an AudioNode and can be connected from one or more AudioNodeOutputs.
 // In the case of multiple connections, the input will act as a unity-gain summing junction, mixing all the outputs.
 // The number of channels of the input's bus is the maximum of the number of channels of all its connections.
 
 class AudioNodeInput final : public AudioSummingJunction {
+    WTF_MAKE_FAST_ALLOCATED(AudioNodeInput);
 public:
     static PassOwnPtr<AudioNodeInput> create(AudioHandler&);
 
     // AudioSummingJunction
     void didUpdate() override;
 
     // Can be called from any thread.
     AudioHandler& handler() const { return m_handler; }
 
     // Must be called with the context's graph lock.
@@ skipping 44 matching lines @@
     // Called from context's audio thread.
     AudioBus* internalSummingBus();
     void sumAllConnections(AudioBus* summingBus, size_t framesToProcess);
 
     RefPtr<AudioBus> m_internalSummingBus;
 };
 
 } // namespace blink
 
 #endif // AudioNodeInput_h