Fix compilation error with latest Xcode.

src/ia32/stub-cache-ia32.cc

 // 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 633 matching lines @@
 
 
 class CallInterceptorCompiler BASE_EMBEDDED {
  public:
   CallInterceptorCompiler(CallStubCompiler* stub_compiler,
                           const ParameterCount& arguments,
                           Register name,
                           ExtraICState extra_state)
       : stub_compiler_(stub_compiler),
         arguments_(arguments),
-        name_(name),
-        extra_state_(extra_state) {}
+        name_(name) {}
 
   void Compile(MacroAssembler* masm,
                Handle<JSObject> object,
                Handle<JSObject> holder,
                Handle<Name> name,
                LookupResult* lookup,
                Register receiver,
                Register scratch1,
                Register scratch2,
                Register scratch3,
@@ skipping 155 matching lines @@
       // Leave the internal frame.
     }
 
     __ cmp(eax, masm->isolate()->factory()->no_interceptor_result_sentinel());
     __ j(not_equal, interceptor_succeeded);
   }
 
   CallStubCompiler* stub_compiler_;
   const ParameterCount& arguments_;
   Register name_;
-  ExtraICState extra_state_;
 };
 
 
 void StoreStubCompiler::GenerateRestoreName(MacroAssembler* masm,
                                             Label* label,
                                             Handle<Name> name) {
   if (!label->is_unused()) {
     __ bind(label);
     __ mov(this->name(), Immediate(name));
   }
@@ skipping 2152 matching lines @@
   // -----------------------------------
   TailCallBuiltin(masm, Builtins::kKeyedLoadIC_Miss);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_IA32