binding: Fixes the fallback mechanism of Document's named properties.

third_party/WebKit/Source/bindings/core/v8/WindowProxy.cpp

 /*
  * Copyright (C) 2008, 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 522 matching lines @@
         return;
     // FIXME: Consider passing StringImpl directly.
     AtomicString name = toCoreAtomicString(property.As<v8::String>());
     HTMLDocument* htmlDocument = V8HTMLDocument::toImpl(info.Holder());
     ASSERT(htmlDocument);
     v8::Local<v8::Value> result = getNamedProperty(htmlDocument, name, info.Holder(), info.GetIsolate());
     if (!result.IsEmpty()) {
         v8SetReturnValue(info, result);
         return;
     }
-    v8::Local<v8::Value> prototype = info.Holder()->GetPrototype();
-    if (prototype->IsObject()) {
-        v8::Local<v8::Value> value;
-        if (prototype.As<v8::Object>()->Get(info.GetIsolate()->GetCurrentContext(), property).ToLocal(&value))
-            v8SetReturnValue(info, value);
-    }
+    v8::Local<v8::Value> value;
+    if (info.Holder()->GetRealNamedPropertyInPrototypeChain(info.GetIsolate()->GetCurrentContext(), property.As<v8::String>()).ToLocal(&value))
+        v8SetReturnValue(info, value);
 }
 
 void WindowProxy::namedItemAdded(HTMLDocument* document, const AtomicString& name)
 {
     ASSERT(m_world->isMainWorld());
 
     if (!isContextInitialized() || !m_scriptState->contextIsValid())
         return;
 
     ScriptState::Scope scope(m_scriptState.get());
@@ skipping 22 matching lines @@
 }
 
 void WindowProxy::updateSecurityOrigin(SecurityOrigin* origin)
 {
     if (!isContextInitialized())
         return;
     setSecurityToken(origin);
 }
 
 } // namespace blink