Remove the WEB_AUDIO compile time flag

third_party/WebKit/Source/modules/webaudio/ConvolverNode.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 14 matching lines @@
 #ifndef ConvolverNode_h
 #define ConvolverNode_h
 
 #include "base/gtest_prod_util.h"
 #include "modules/ModulesExport.h"
 #include "modules/webaudio/AudioNode.h"
 #include "wtf/OwnPtr.h"
 #include "wtf/RefPtr.h"
 #include "wtf/ThreadingPrimitives.h"
 
-#if ENABLE(WEB_AUDIO)
-
 namespace blink {
 
 class AudioBuffer;
 class ExceptionState;
 class Reverb;
 
 class MODULES_EXPORT ConvolverHandler final : public AudioHandler {
 public:
     static PassRefPtr<ConvolverHandler> create(AudioNode&, float sampleRate);
     ~ConvolverHandler() override;
@@ skipping 39 matching lines @@
 
 private:
     ConvolverNode(AbstractAudioContext&, float sampleRate);
     ConvolverHandler& convolverHandler() const;
 
     FRIEND_TEST_ALL_PREFIXES(ConvolverNodeTest, ReverbLifetime);
 };
 
 } // namespace blink
 
-#endif // ENABLE(WEB_AUDIO)
-
 #endif // ConvolverNode_h