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

Source/core/css/CSSGradientValue.cpp

 /*
  * Copyright (C) 2008 Apple 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 21 matching lines @@
 #include "core/dom/NodeRenderStyle.h"
 #include "core/dom/TextLinkColors.h"
 #include "core/rendering/RenderObject.h"
 #include "platform/geometry/IntSize.h"
 #include "platform/graphics/Gradient.h"
 #include "platform/graphics/GradientGeneratedImage.h"
 #include "platform/graphics/Image.h"
 #include "wtf/text/StringBuilder.h"
 #include "wtf/text/WTFString.h"
 
-using namespace std;
-
 namespace WebCore {
 
 void CSSGradientColorStop::trace(Visitor* visitor)
 {
     visitor->trace(m_position);
     visitor->trace(m_color);
 }
 
 PassRefPtr<Image> CSSGradientValue::image(RenderObject* renderer, const IntSize& size)
 {
@@ skipping 995 matching lines @@
             break;
         default:
             break;
         }
 
         // Now compute the end radii based on the second point, shape and fill.
 
         // 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;
             }
             secondRadius = xDist;
             aspectRatio = xDist / yDist;
             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;
             }
             secondRadius = xDist;
             aspectRatio = xDist / yDist;
             break;
         }
         case ClosestCorner: {
             FloatPoint corner;
             float distance = distanceToClosestCorner(secondPoint, size, corner);
             if (shape == Circle)
                 secondRadius = distance;
             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;
             }
             break;
         }
 
         case FarthestCorner: {
             FloatPoint corner;
             float distance = distanceToFarthestCorner(secondPoint, size, corner);
             if (shape == Circle)
                 secondRadius = distance;
             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;
             }
             break;
         }
         }
     }
 
     RefPtr<Gradient> gradient = Gradient::create(firstPoint, firstRadius, secondPoint, secondRadius, aspectRatio);
@@ skipping 64 matching lines @@
     visitor->trace(m_firstRadius);
     visitor->trace(m_secondRadius);
     visitor->trace(m_shape);
     visitor->trace(m_sizingBehavior);
     visitor->trace(m_endHorizontalSize);
     visitor->trace(m_endVerticalSize);
     CSSGradientValue::traceAfterDispatch(visitor);
 }
 
 } // namespace WebCore