Remove useless calls to v8::Value::ToString()

Source/bindings/v8/custom/V8WindowCustom.cpp

 /*
  * Copyright (C) 2009, 2011 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 462 matching lines @@
 
         String name = toWebCoreString(key);
         Frame* childFrame = target->tree()->scopedChild(name);
         // Notice that we can't call HasRealNamedProperty for ACCESS_HAS
         // because that would generate infinite recursion.
         if (type == v8::ACCESS_HAS && childFrame)
             return true;
         // We need to explicitly compare against nameOfProtoProperty because
         // V8's JSObject::LocalLookup finds __proto__ before
         // interceptors and even when __proto__ isn't a "real named property".
-        v8::Handle<v8::String> keyString = key->ToString();
+        v8::Handle<v8::String> keyString = key.As<v8::String>();
         if (type == v8::ACCESS_GET
             && childFrame
             && !host->HasRealNamedProperty(keyString)
             && !window->HasRealNamedProperty(keyString)
             && name != nameOfProtoProperty)
             return true;
     }
 
     return BindingSecurity::shouldAllowAccessToFrame(target, DoNotReportSecurityError);
 }
@@ skipping 61 matching lines @@
     v8::Handle<v8::Context> context = frame->script()->currentWorldContext();
     if (context.IsEmpty())
         return v8Undefined();
 
     v8::Handle<v8::Object> global = context->Global();
     ASSERT(!global.IsEmpty());
     return global;
 }
 
 } // namespace WebCore