Removing "using" declarations that import names in the C++ Standard library.(Source/platform/audio)

Source/platform/audio/HRTFDatabase.cpp

 /*
  * 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
@@ skipping 14 matching lines @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 
 #if ENABLE(WEB_AUDIO)
 
 #include "platform/audio/HRTFDatabase.h"
 
-
-using namespace std;
-
 namespace blink {
 
 const int HRTFDatabase::MinElevation = -45;
 const int HRTFDatabase::MaxElevation = 90;
 const unsigned HRTFDatabase::RawElevationAngleSpacing = 15;
 const unsigned HRTFDatabase::NumberOfRawElevations = 10; // -45 -> +90 (each 15 degrees)
 const unsigned HRTFDatabase::InterpolationFactor = 1;
 const unsigned HRTFDatabase::NumberOfTotalElevations = NumberOfRawElevations * InterpolationFactor;
 
 PassOwnPtr<HRTFDatabase> HRTFDatabase::create(float sampleRate)
@@ skipping 56 matching lines @@
         kernelR = 0;
         return;
     }
 
     hrtfElevation->getKernelsFromAzimuth(azimuthBlend, azimuthIndex, kernelL, kernelR, frameDelayL, frameDelayR);
 }
 
 unsigned HRTFDatabase::indexFromElevationAngle(double elevationAngle)
 {
     // Clamp to allowed range.
-    elevationAngle = max(static_cast<double>(MinElevation), elevationAngle);
-    elevationAngle = min(static_cast<double>(MaxElevation), elevationAngle);
+    elevationAngle = std::max(static_cast<double>(MinElevation), elevationAngle);
+    elevationAngle = std::min(static_cast<double>(MaxElevation), elevationAngle);
 
     unsigned elevationIndex = static_cast<int>(InterpolationFactor * (elevationAngle - MinElevation) / RawElevationAngleSpacing);
     return elevationIndex;
 }
 
 } // namespace blink
 
 #endif // ENABLE(WEB_AUDIO)