Remove the WEB_AUDIO compile time flag

third_party/WebKit/Source/platform/audio/Spatializer.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "platform/audio/Spatializer.h"
-
-#if ENABLE(WEB_AUDIO)
 #include "platform/audio/StereoPanner.h"
 
 namespace blink {
 
 PassOwnPtr<Spatializer> Spatializer::create(PanningModel model, float sampleRate)
 {
     switch (model) {
     case PanningModelEqualPower:
         return adoptPtr(new StereoPanner(sampleRate));
     default:
         ASSERT_NOT_REACHED();
         return nullptr;
     }
 }
 
 Spatializer::~Spatializer()
 {
 }
 
 } // namespace blink
 
-#endif // ENABLE(WEB_AUDIO)