Add toWebCoreString() / toWebCoreAtomicString() overloads taking a v8::String

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 75 matching lines @@
 
     if (!scriptContext) {
         es.throwDOMException(InvalidAccessError);
         return;
     }
 
     v8::Handle<v8::Value> function = args[0];
     String functionString;
     if (!function->IsFunction()) {
         if (function->IsString()) {
-            functionString = toWebCoreString(function);
+            functionString = toWebCoreString(function.As<v8::String>());
         } else {
             v8::Handle<v8::Value> v8String = function->ToString();
 
             // Bail out if string conversion failed.
             if (v8String.IsEmpty())
                 return;
 
             functionString = toWebCoreString(v8String);
         }
 
@@ skipping 359 matching lines @@
     if (!target)
         return false;
 
     // Notify the loader's client if the initial document has been accessed.
     if (target->loader()->stateMachine()->isDisplayingInitialEmptyDocument())
         target->loader()->didAccessInitialDocument();
 
     if (key->IsString()) {
         DEFINE_STATIC_LOCAL(AtomicString, nameOfProtoProperty, ("__proto__", AtomicString::ConstructFromLiteral));
 
-        String name = toWebCoreString(key);
+        String name = toWebCoreString(key.As<v8::String>());
         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.As<v8::String>();
         if (type == v8::ACCESS_GET
@@ skipping 70 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