Remove leak of objects between isolated worlds on custom events.

Source/bindings/v8/Dictionary.cpp

 /*
  * Copyright (C) 2010 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 92 matching lines @@
     ASSERT(m_isolate == v8::Isolate::GetCurrent());
     v8::Handle<v8::String> v8Key = v8String(key, m_isolate);
     if (!options->Has(v8Key))
         return false;
     value = options->Get(v8Key);
     if (value.IsEmpty())
         return false;
     return true;
 }
 
+bool Dictionary::get(const String& key, v8::Local<v8::Value>& value) const
+{
+    return getKey(key, value);
+}
+
 bool Dictionary::get(const String& key, bool& value) const
 {
     v8::Local<v8::Value> v8Value;
     if (!getKey(key, v8Value))
         return false;
 
     v8::Local<v8::Boolean> v8Bool = v8Value->ToBoolean();
     if (v8Bool.IsEmpty())
         return false;
     value = v8Bool->Value();
@@ skipping 471 matching lines @@
         v8::Local<v8::String> key = properties->Get(i)->ToString();
         if (!options->Has(key))
             continue;
         names.append(toWebCoreString(key));
     }
 
     return true;
 }
 
 } // namespace WebCore