Remove the WEB_AUDIO compile time flag

third_party/WebKit/Source/modules/webaudio/MediaElementAudioSourceNode.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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 14 matching lines @@
 #ifndef MediaElementAudioSourceNode_h
 #define MediaElementAudioSourceNode_h
 
 #include "modules/webaudio/AudioSourceNode.h"
 #include "platform/audio/AudioSourceProviderClient.h"
 #include "platform/audio/MultiChannelResampler.h"
 #include "wtf/OwnPtr.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/ThreadingPrimitives.h"
 
-#if ENABLE(WEB_AUDIO)
-
 namespace blink {
 
 class AbstractAudioContext;
 class HTMLMediaElement;
 
 class MediaElementAudioSourceHandler final : public AudioHandler {
 public:
     static PassRefPtr<MediaElementAudioSourceHandler> create(AudioNode&, HTMLMediaElement&);
     ~MediaElementAudioSourceHandler() override;
 
@@ skipping 66 matching lines @@
     void onCurrentSrcChanged(const KURL& currentSrc) override;
     void lock() override;
     void unlock() override;
 
 private:
     MediaElementAudioSourceNode(AbstractAudioContext&, HTMLMediaElement&);
 };
 
 } // namespace blink
 
-#endif // ENABLE(WEB_AUDIO)
-
 #endif // MediaElementAudioSourceNode_h