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

Source/core/rendering/RenderImage.cpp

Index: Source/core/rendering/RenderImage.cpp
diff --git a/Source/core/rendering/RenderImage.cpp b/Source/core/rendering/RenderImage.cpp
index 610c79064462fd5f48ddc00abd752e9ab20663ef..0007c8b7ae7548845be5f135c3e4f9bbab76b271 100644
--- a/Source/core/rendering/RenderImage.cpp
+++ b/Source/core/rendering/RenderImage.cpp
@@ -49,8 +49,6 @@
 #include "platform/graphics/GraphicsContext.h"
 #include "platform/graphics/GraphicsContextStateSaver.h"
 
-using namespace std;
-
 namespace WebCore {
 
 using namespace HTMLNames;
@@ -130,7 +128,7 @@ bool RenderImage::setImageSizeForAltText(ImageResource* newImage /* = 0 */)
         FontCachePurgePreventer fontCachePurgePreventer;
 
         const Font& font = style()->font();
-        IntSize paddedTextSize(paddingWidth + min(ceilf(font.width(RenderBlockFlow::constructTextRun(this, font, m_altText, style()))), maxAltTextWidth), paddingHeight + min(font.fontMetrics().height(), maxAltTextHeight));
+        IntSize paddedTextSize(paddingWidth + std::min(ceilf(font.width(RenderBlockFlow::constructTextRun(this, font, m_altText, style()))), maxAltTextWidth), paddingHeight + std::min(font.fontMetrics().height(), maxAltTextHeight));
         imageSize = imageSize.expandedTo(paddedTextSize);
     }