Patch RecordWriteStub after adding it to the stub cache not during generation.

src/arm/code-stubs-arm.h

 // Copyright 2011 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 448 matching lines @@
               address,  // An input reg.
               value) {  // One scratch reg.
   }
 
   enum Mode {
     STORE_BUFFER_ONLY,
     INCREMENTAL,
     INCREMENTAL_COMPACTION
   };
 
+  static Mode GetMode(Code* stub) {
+    return STORE_BUFFER_ONLY;
+  }
+
   static void Patch(Code* stub, Mode mode) {
     ASSERT(mode == STORE_BUFFER_ONLY);
   }
 
  private:
   // This is a helper class for freeing up 3 scratch registers.  The input is
   // two registers that must be preserved and one scratch register provided by
   // the caller.
   class RegisterAllocation {
    public:
@@ skipping 334 matching lines @@
 
   class LookupModeBits: public BitField<LookupMode, 0, 1> {};
 
   LookupMode mode_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_ARM_CODE_STUBS_ARM_H_