Made sure NativeMessagingHostTest.All can handle out of order responses.

remoting/host/setup/native_messaging_host.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef REMOTING_HOST_SETUP_NATIVE_MESSAGING_HOST_H_
 #define REMOTING_HOST_SETUP_NATIVE_MESSAGING_HOST_H_
 
 #include "base/callback_forward.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 120 matching lines @@
   // not afterwards), so it needs to be destroyed before other members of this
   // class (except for |weak_factory_|).
   scoped_ptr<remoting::DaemonController> daemon_controller_;
 
   // Used to load and update the paired clients for this host.
   scoped_refptr<protocol::PairingRegistry> pairing_registry_;
 
   // Used to exchange the service account authorization code for credentials.
   scoped_ptr<OAuthClient> oauth_client_;
 
+  // Keeps track of pending requests. Used to delay shutdown until all responses
+  // have been sent.
+  int pending_requests_;
+
+  // True if Shutdown() has been called.
+  bool shutdown_;
+
   base::WeakPtrFactory<NativeMessagingHost> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(NativeMessagingHost);
 };
 
 // Creates a NativeMessagingHost instance, attaches it to stdin/stdout and runs
 // the message loop until NativeMessagingHost signals shutdown.
 int NativeMessagingHostMain();
 
 }  // namespace remoting
 
 #endif  // REMOTING_HOST_SETUP_NATIVE_MESSAGING_HOST_H_