Do not call memset() to initialize StubCache.

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 53 matching lines @@
 };
 
 
 class StubCache {
  public:
   struct Entry {
     String* key;
     Code* value;
   };
 
-  void Initialize(bool create_heap_objects);
+  void Initialize();
 
 
   // Computes the right stub matching. Inserts the result in the
   // cache before returning.  This might compile a stub if needed.
   Handle<Code> ComputeLoadNonexistent(Handle<String> name,
                                       Handle<JSObject> receiver);
 
   Handle<Code> ComputeLoadField(Handle<String> name,
                                 Handle<JSObject> receiver,
                                 Handle<JSObject> holder,
@@ skipping 782 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_