Clean up the proxy code for handling frame navigation....

webkit/port/bindings/v8/v8_proxy.h

Index: webkit/port/bindings/v8/v8_proxy.h
===================================================================
--- webkit/port/bindings/v8/v8_proxy.h	(revision 5350)
+++ webkit/port/bindings/v8/v8_proxy.h	(working copy)
@@ -164,11 +164,11 @@
   // Clear page-specific data, but keep the global object identify.
   void clearForNavigation();
 
-  // Clear data before closing the frame.
+  // Clear page-specific data before shutting down the proxy object.
   void clearForClose();
 
-  // Notify that a new DOMWindow object is ready.
-  void domWindowReady();
+  // Update document object of the frame.
+  void updateDocument();
 
   // Destroy the global object.
   void DestroyGlobal();
@@ -189,9 +189,6 @@
 
   bool isEnabled();
 
-  // Remove 'document' property from the global object.
-  void clearDocumentWrapper();
-
   // Find/Create/Remove event listener wrappers.
   PassRefPtr<V8EventListener> FindV8EventListener(v8::Local<v8::Value> listener,
                                        bool html);
@@ -421,6 +418,7 @@
  private:
   void initContextIfNeeded();
   void DisconnectEventListeners();
+  void SetSecurityToken();
 
   static bool CanAccessPrivate(DOMWindow* target);
 
@@ -484,10 +482,6 @@
   static const char* GetSVGExceptionName(int exception_code);
 #endif
 
-  // Update m_document field, dispose old one and create a string reference
-  // to the new one.
-  void UpdateDocumentHandle(v8::Local<v8::Object> handle);
-
   // Returns a local handle of the context.
   v8::Local<v8::Context> GetContext() {
     return v8::Local<v8::Context>::New(m_context);
@@ -497,9 +491,6 @@
   v8::Persistent<v8::Context> m_context;
   v8::Persistent<v8::Object> m_global;
 
-  // Special handling of document wrapper;
-  v8::Persistent<v8::Object> m_document;
-
   int m_handlerLineno;
 
   // A list of event listeners created for this frame,