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

Source/core/css/CSSGradientValue.cpp

Index: Source/core/css/CSSGradientValue.cpp
diff --git a/Source/core/css/CSSGradientValue.cpp b/Source/core/css/CSSGradientValue.cpp
index afb56973727ed4e3cabbec8482c20c0962cd8de6..277162fd89ba49b8b354817c3e4bca249a68a349 100644
--- a/Source/core/css/CSSGradientValue.cpp
+++ b/Source/core/css/CSSGradientValue.cpp
@@ -39,8 +39,6 @@
 #include "wtf/text/StringBuilder.h"
 #include "wtf/text/WTFString.h"
 
-using namespace std;
-
 namespace WebCore {
 
 void CSSGradientColorStop::trace(Visitor* visitor)
@@ -1056,10 +1054,10 @@ PassRefPtr<Gradient> CSSRadialGradientValue::createGradient(const CSSToLengthCon
         // Horizontal
         switch (fill) {
         case ClosestSide: {
-            float xDist = min(secondPoint.x(), size.width() - secondPoint.x());
-            float yDist = min(secondPoint.y(), size.height() - secondPoint.y());
+            float xDist = std::min(secondPoint.x(), size.width() - secondPoint.x());
+            float yDist = std::min(secondPoint.y(), size.height() - secondPoint.y());
             if (shape == Circle) {
-                float smaller = min(xDist, yDist);
+                float smaller = std::min(xDist, yDist);
                 xDist = smaller;
                 yDist = smaller;
             }
@@ -1068,10 +1066,10 @@ PassRefPtr<Gradient> CSSRadialGradientValue::createGradient(const CSSToLengthCon
             break;
         }
         case FarthestSide: {
-            float xDist = max(secondPoint.x(), size.width() - secondPoint.x());
-            float yDist = max(secondPoint.y(), size.height() - secondPoint.y());
+            float xDist = std::max(secondPoint.x(), size.width() - secondPoint.x());
+            float yDist = std::max(secondPoint.y(), size.height() - secondPoint.y());
             if (shape == Circle) {
-                float larger = max(xDist, yDist);
+                float larger = std::max(xDist, yDist);
                 xDist = larger;
                 yDist = larger;
             }
@@ -1087,8 +1085,8 @@ PassRefPtr<Gradient> CSSRadialGradientValue::createGradient(const CSSToLengthCon
             else {
                 // If <shape> is ellipse, the gradient-shape has the same ratio of width to height
                 // that it would if closest-side or farthest-side were specified, as appropriate.
-                float xDist = min(secondPoint.x(), size.width() - secondPoint.x());
-                float yDist = min(secondPoint.y(), size.height() - secondPoint.y());
+                float xDist = std::min(secondPoint.x(), size.width() - secondPoint.x());
+                float yDist = std::min(secondPoint.y(), size.height() - secondPoint.y());
 
                 secondRadius = horizontalEllipseRadius(corner - secondPoint, xDist / yDist);
                 aspectRatio = xDist / yDist;
@@ -1104,8 +1102,8 @@ PassRefPtr<Gradient> CSSRadialGradientValue::createGradient(const CSSToLengthCon
             else {
                 // If <shape> is ellipse, the gradient-shape has the same ratio of width to height
                 // that it would if closest-side or farthest-side were specified, as appropriate.
-                float xDist = max(secondPoint.x(), size.width() - secondPoint.x());
-                float yDist = max(secondPoint.y(), size.height() - secondPoint.y());
+                float xDist = std::max(secondPoint.x(), size.width() - secondPoint.x());
+                float yDist = std::max(secondPoint.y(), size.height() - secondPoint.y());
 
                 secondRadius = horizontalEllipseRadius(corner - secondPoint, xDist / yDist);
                 aspectRatio = xDist / yDist;