Fix bug when transferring SharedArrayBuffer to multiple Workers. (try 2)

src/d8.h

Index: src/d8.h
diff --git a/src/d8.h b/src/d8.h
index 6c632c9709ca2980e2ec4e9b9240e15e18a8ee00..393392ec407ca77157ee41c50d030cccff956650 100644
--- a/src/d8.h
+++ b/src/d8.h
@@ -214,9 +214,9 @@ class SerializationData {
   }
 
  private:
-  i::List<uint8_t> data;
-  i::List<ArrayBuffer::Contents> array_buffer_contents;
-  i::List<SharedArrayBuffer::Contents> shared_array_buffer_contents;
+  i::List<uint8_t> data_;
+  i::List<ArrayBuffer::Contents> array_buffer_contents_;
+  i::List<SharedArrayBuffer::Contents> shared_array_buffer_contents_;
 };
 
 
@@ -273,7 +273,6 @@ class Worker {
   };
 
   void ExecuteInThread();
-  void Cleanup();
   static void PostMessageOut(const v8::FunctionCallbackInfo<v8::Value>& args);
 
   base::Semaphore in_semaphore_;