Remove the WEB_AUDIO compile time flag

third_party/WebKit/Source/modules/webaudio/AudioParamTimeline.h

 /*
  * 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:
  *
  * 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 17 matching lines @@
 
 #ifndef AudioParamTimeline_h
 #define AudioParamTimeline_h
 
 #include "core/dom/DOMTypedArray.h"
 #include "modules/webaudio/AbstractAudioContext.h"
 #include "wtf/Forward.h"
 #include "wtf/Threading.h"
 #include "wtf/Vector.h"
 
-#if ENABLE(WEB_AUDIO)
-
 namespace blink {
 
 class AudioParamTimeline {
     DISALLOW_NEW();
 public:
     AudioParamTimeline()
     {
     }
 
     void setValueAtTime(float value, double time, ExceptionState&);
@@ skipping 69 matching lines @@
 
     // Produce a nice string describing the event in human-readable form.
     String eventToString(const ParamEvent&);
     Vector<ParamEvent> m_events;
 
     mutable Mutex m_eventsLock;
 };
 
 } // namespace blink
 
-#endif // ENABLE(WEB_AUDIO)
-
 #endif // AudioParamTimeline_h