Remove the WEB_AUDIO compile time flag

third_party/WebKit/Source/modules/webaudio/OfflineAudioContext.idl

 /*
  * Copyright (C) 2012, 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
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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 [
-    Conditional=WEB_AUDIO,
     Constructor(unsigned long numberOfChannels, unsigned long numberOfFrames, float sampleRate),
     ConstructorCallWith=ExecutionContext,
     RaisesException=Constructor,
     NoInterfaceObject,
 ] interface OfflineAudioContext : AudioContext {
     // Offline rendering
     attribute EventHandler oncomplete;
     [CallWith=ScriptState, ImplementedAs=startOfflineRendering, MeasureAs=OfflineAudioContextStartRendering] Promise<AudioBuffer> startRendering();
     [CallWith=ScriptState, ImplementedAs=suspendContext, MeasureAs=OfflineAudioContextSuspend] Promise<void> suspend(double suspendTime);
     [CallWith=ScriptState, ImplementedAs=resumeContext, MeasureAs=OfflineAudioContextResume] Promise<void> resume();
 };