Removing "using" declarations that import names in the C++ Standard library.(Source/platform/[fonts…

Source/platform/fonts/mac/FontComplexTextMac.cpp

Index: Source/platform/fonts/mac/FontComplexTextMac.cpp
diff --git a/Source/platform/fonts/mac/FontComplexTextMac.cpp b/Source/platform/fonts/mac/FontComplexTextMac.cpp
index c9ba466ab88c4d9ccce0d2ee4c4fe5fe22a21f2f..02b2900d733d31662da2514aef392230ed1bd527 100644
--- a/Source/platform/fonts/mac/FontComplexTextMac.cpp
+++ b/Source/platform/fonts/mac/FontComplexTextMac.cpp
@@ -36,8 +36,6 @@
 #include "platform/text/TextRun.h"
 #include "wtf/MathExtras.h"
 
-using namespace std;
-
 namespace blink {
 
 static bool preferHarfBuzz(const Font* font)
@@ -138,8 +136,8 @@ float Font::floatWidthForComplexText(const TextRun& run, HashSet<const SimpleFon
     ComplexTextController controller(this, run, true, fallbackFonts);
     glyphBounds->setTop(floorf(-controller.minGlyphBoundingBoxY()));
     glyphBounds->setBottom(ceilf(controller.maxGlyphBoundingBoxY()));
-    glyphBounds->setLeft(max<int>(0, floorf(-controller.minGlyphBoundingBoxX())));
-    glyphBounds->setRight(max<int>(0, ceilf(controller.maxGlyphBoundingBoxX() - controller.totalWidth())));
+    glyphBounds->setLeft(std::max<int>(0, floorf(-controller.minGlyphBoundingBoxX())));
+    glyphBounds->setRight(std::max<int>(0, ceilf(controller.maxGlyphBoundingBoxX() - controller.totalWidth())));
 
     return controller.totalWidth();
 }