Drop a "using namespace WTF" in V8CSSStyleDeclarationCustom.cpp

third_party/WebKit/Source/bindings/core/v8/custom/V8CSSStyleDeclarationCustom.cpp

Index: third_party/WebKit/Source/bindings/core/v8/custom/V8CSSStyleDeclarationCustom.cpp
diff --git a/third_party/WebKit/Source/bindings/core/v8/custom/V8CSSStyleDeclarationCustom.cpp b/third_party/WebKit/Source/bindings/core/v8/custom/V8CSSStyleDeclarationCustom.cpp
index 90042c7a6a24254075284352e863f49f30530771..2a2da6be410c7eca9a2e6733866aaa6e51ac1c16 100644
--- a/third_party/WebKit/Source/bindings/core/v8/custom/V8CSSStyleDeclarationCustom.cpp
+++ b/third_party/WebKit/Source/bindings/core/v8/custom/V8CSSStyleDeclarationCustom.cpp
@@ -49,8 +49,6 @@
 #include "platform/wtf/text/StringBuilder.h"
 #include "platform/wtf/text/StringConcatenate.h"
 
-using namespace WTF;
-
 namespace blink {
 
 // Check for a CSS prefix.
@@ -161,7 +159,7 @@ void V8CSSStyleDeclaration::namedPropertyEnumeratorCustom(
         property_names.push_back(getJSPropertyName(property_id));
     }
     std::sort(property_names.begin(), property_names.end(),
-              CodePointCompareLessThan);
+              WTF::CodePointCompareLessThan);
     property_names_length = property_names.size();
   }