Mojo: Add/use |typedef std::vector<scoped_refptr<Dispatcher> > DispatcherVector.

mojo/system/local_message_pipe_endpoint.h

Index: mojo/system/local_message_pipe_endpoint.h
diff --git a/mojo/system/local_message_pipe_endpoint.h b/mojo/system/local_message_pipe_endpoint.h
index 963188f1df32642ff6f7c5aa63ba3b3d882fe086..d30f54bce0a3377a8ad4a4bfd85c90c316efb1c6 100644
--- a/mojo/system/local_message_pipe_endpoint.h
+++ b/mojo/system/local_message_pipe_endpoint.h
@@ -31,11 +31,11 @@ class MOJO_SYSTEM_IMPL_EXPORT LocalMessagePipeEndpoint
   // implement/override these:
   virtual void Close() OVERRIDE;
   virtual void CancelAllWaiters() OVERRIDE;
-  virtual MojoResult ReadMessage(
-      void* bytes, uint32_t* num_bytes,
-      std::vector<scoped_refptr<Dispatcher> >* dispatchers,
-      uint32_t* num_dispatchers,
-      MojoReadMessageFlags flags) OVERRIDE;
+  virtual MojoResult ReadMessage(void* bytes,
+                                 uint32_t* num_bytes,
+                                 DispatcherVector* dispatchers,
+                                 uint32_t* num_dispatchers,
+                                 MojoReadMessageFlags flags) OVERRIDE;
   virtual MojoResult AddWaiter(Waiter* waiter,
                                MojoWaitFlags flags,
                                MojoResult wake_result) OVERRIDE;