Cleanup namespace usage in Source/web/Web[I-Z]*.cpp

Source/web/WebScriptBindings.cpp

 /*
  * Copyright (C) 2013 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 16 matching lines @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 #include "public/web/WebScriptBindings.h"
 
 #include "bindings/core/v8/V8Binding.h"
 #include "public/platform/WebString.h"
 
-using namespace blink;
-
 namespace blink {
 
 v8::Local<v8::String> WebScriptBindings::toV8String(const WebString& string, v8::Isolate* isolate)
 {
     return v8String(isolate, string);
 }
 
 WebString WebScriptBindings::toWebString(v8::Handle<v8::String> v8String)
 {
     return v8StringToWebCoreString<String>(v8String, Externalize);
 }
 
 } // namespace blink