Fix improved LoadICs for dictionaries with callbacks.

src/stub-cache.h

 // Copyright 2012 the V8 project authors. 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
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 532 matching lines @@
                          Handle<String> name,
                          Label* miss);
 
   void GenerateLoadCallback(Handle<JSObject> object,
                             Handle<JSObject> holder,
                             Register receiver,
                             Register name_reg,
                             Register scratch1,
                             Register scratch2,
                             Register scratch3,
+                            Register scratch4,
                             Handle<AccessorInfo> callback,
                             Handle<String> name,
                             Label* miss);
 
   void GenerateDictionaryLoadCallback(Register receiver,
                                       Register name_reg,
                                       Register scratch1,
                                       Register scratch2,
                                       Register scratch3,
                                       Handle<AccessorInfo> callback,
@@ skipping 362 matching lines @@
   Handle<JSFunction> constant_function_;
   bool is_simple_api_call_;
   Handle<FunctionTemplateInfo> expected_receiver_type_;
   Handle<CallHandlerInfo> api_call_info_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_STUB_CACHE_H_