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

Source/modules/webaudio/AudioSummingJunction.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 14 matching lines @@
 #include "config.h"
 
 #if ENABLE(WEB_AUDIO)
 
 #include "modules/webaudio/AudioSummingJunction.h"
 
 #include "modules/webaudio/AudioContext.h"
 #include "modules/webaudio/AudioNodeOutput.h"
 #include <algorithm>
 
-using namespace std;
-
 namespace WebCore {
 
 AudioSummingJunction::AudioSummingJunction(AudioContext* context)
     : m_context(context)
     , m_renderingStateNeedUpdating(false)
 {
 }
 
 AudioSummingJunction::~AudioSummingJunction()
 {
@@ skipping 26 matching lines @@
 
         didUpdate();
 
         m_renderingStateNeedUpdating = false;
     }
 }
 
 } // namespace WebCore
 
 #endif // ENABLE(WEB_AUDIO)