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

Source/modules/webaudio/PannerNode.cpp

Index: Source/modules/webaudio/PannerNode.cpp
diff --git a/Source/modules/webaudio/PannerNode.cpp b/Source/modules/webaudio/PannerNode.cpp
index 06c204be13995c94cb079589a0a7705368bd9e69..0fd7edc8a1219fd8a180e144c525e3b20eeb2395 100644
--- a/Source/modules/webaudio/PannerNode.cpp
+++ b/Source/modules/webaudio/PannerNode.cpp
@@ -36,8 +36,6 @@
 #include "modules/webaudio/AudioNodeOutput.h"
 #include "wtf/MathExtras.h"
 
-using namespace std;
-
 namespace WebCore {
 
 static void fixNANs(double &x)
@@ -467,8 +465,8 @@ double PannerNode::calculateDopplerRate()
                 sourceProjection = -sourceProjection;
 
                 double scaledSpeedOfSound = speedOfSound / dopplerFactor;
-                listenerProjection = min(listenerProjection, scaledSpeedOfSound);
-                sourceProjection = min(sourceProjection, scaledSpeedOfSound);
+                listenerProjection = std::min(listenerProjection, scaledSpeedOfSound);
+                sourceProjection = std::min(sourceProjection, scaledSpeedOfSound);
 
                 dopplerShift = ((speedOfSound - dopplerFactor * listenerProjection) / (speedOfSound - dopplerFactor * sourceProjection));
                 fixNANs(dopplerShift); // avoid illegal values