Changes to support a second VM.

Source/WebCore/bindings/v8/SerializedScriptValue.h

Index: Source/WebCore/bindings/v8/SerializedScriptValue.h
diff --git a/Source/WebCore/bindings/v8/SerializedScriptValue.h b/Source/WebCore/bindings/v8/SerializedScriptValue.h
index a559cf91af0de2ff14cef2f6eaf0308305b80c49..b9b66b081014e0ac1e77ff75018f5ef40f5c023f 100644
--- a/Source/WebCore/bindings/v8/SerializedScriptValue.h
+++ b/Source/WebCore/bindings/v8/SerializedScriptValue.h
@@ -38,6 +38,8 @@
 namespace WebCore {
 
 class MessagePort;
+class ScriptValueDeserializer;
+class ScriptValueSerializer;
 
 typedef Vector<RefPtr<MessagePort>, 1> MessagePortArray;
 
@@ -70,6 +72,9 @@ public:
     // case of failure.
     v8::Handle<v8::Value> deserialize(MessagePortArray* = 0);
 
+    static PassRefPtr<SerializedScriptValue> create(ScriptValueSerializer*);
+    bool deserialize(ScriptValueDeserializer*);
+
 private:
     enum StringDataMode {
         StringValue,