Removing using declarations that import names in the C++ Standard library.

Source/modules/webaudio/OscillatorNode.cpp

 /*
  * 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
@@ skipping 19 matching lines @@
 
 #include "platform/audio/AudioUtilities.h"
 #include "platform/audio/VectorMath.h"
 #include "modules/webaudio/AudioContext.h"
 #include "modules/webaudio/AudioNodeOutput.h"
 #include "modules/webaudio/PeriodicWave.h"
 #include "wtf/MathExtras.h"
 #include "wtf/StdLibExtras.h"
 #include <algorithm>
 
-using namespace std;
-
 namespace WebCore {
 
 using namespace VectorMath;
 
 PassRefPtrWillBeRawPtr<OscillatorNode> OscillatorNode::create(AudioContext* context, float sampleRate)
 {
     return adoptRefWillBeNoop(new OscillatorNode(context, sampleRate));
 }
 
 OscillatorNode::OscillatorNode(AudioContext* context, float sampleRate)
@@ skipping 293 matching lines @@
 {
     visitor->trace(m_frequency);
     visitor->trace(m_detune);
     visitor->trace(m_periodicWave);
     AudioScheduledSourceNode::trace(visitor);
 }
 
 } // namespace WebCore
 
 #endif // ENABLE(WEB_AUDIO)