Ensure that DataPipeProducerDispatcher::CreateEquivalentDispatcherAndCloseImplNoLock serializes the…

mojo/edk/system/data_pipe_producer_dispatcher.h

Index: mojo/edk/system/data_pipe_producer_dispatcher.h
diff --git a/mojo/edk/system/data_pipe_producer_dispatcher.h b/mojo/edk/system/data_pipe_producer_dispatcher.h
index d8c86e4694a13c98379208f7d7ec9759fb926b72..daf038b39922920aa7f4a976bbf52b4cbb87a1c7 100644
--- a/mojo/edk/system/data_pipe_producer_dispatcher.h
+++ b/mojo/edk/system/data_pipe_producer_dispatcher.h
@@ -85,6 +85,9 @@ class MOJO_SYSTEM_IMPL_EXPORT DataPipeProducerDispatcher final
   bool InTwoPhaseWrite() const;
   bool WriteDataIntoMessages(const void* elements, uint32_t num_bytes);
 
+  // See comment in MessagePipeDispatcher for this method.
+  void SerializeInternal();
+
   MojoCreateDataPipeOptions options_;
 
   // Protected by |lock()|:
@@ -98,6 +101,7 @@ class MOJO_SYSTEM_IMPL_EXPORT DataPipeProducerDispatcher final
 
   bool error_;
 
+  bool serialized_;
   ScopedPlatformHandle serialized_platform_handle_;
   std::vector<char> serialized_write_buffer_;
   std::vector<char> two_phase_data_;