Add mock classes for Bus, ObjectProxy, and ExportedObject.

dbus/object_proxy.h

 // Copyright (c) 2011 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 DBUS_OBJECT_PROXY_H_
 #define DBUS_OBJECT_PROXY_H_
 #pragma once
 
+#include <map>
 #include <string>
 #include <vector>
 #include <dbus/dbus.h>
 
 #include "base/callback.h"
 #include "base/memory/ref_counted.h"
 
 class MessageLoop;
 
 namespace dbus {
@@ skipping 78 matching lines @@
                                const std::string& signal_name,
                                SignalCallback signal_callback,
                                OnConnectedCallback on_connected_callback);
 
   // Detaches from the remote object. The Bus object will take care of
   // detaching so you don't have to do this manually.
   //
   // BLOCKING CALL.
   virtual void Detach();
 
+ protected:
+  // This is protected, so we can define sub classes.
+  virtual ~ObjectProxy();
+
  private:
   friend class base::RefCountedThreadSafe<ObjectProxy>;
-  virtual ~ObjectProxy();
 
   // Struct of data we'll be passing from StartAsyncMethodCall() to
   // OnPendingCallIsCompleteThunk().
   struct OnPendingCallIsCompleteData {
     OnPendingCallIsCompleteData(ObjectProxy* in_object_proxy,
                                 ResponseCallback in_response_callback);
     ~OnPendingCallIsCompleteData();
 
     ObjectProxy* object_proxy;
     ResponseCallback response_callback;
@@ skipping 56 matching lines @@
   MethodTable method_table_;
 
   std::vector<std::string> match_rules_;
 
   DISALLOW_COPY_AND_ASSIGN(ObjectProxy);
 };
 
 }  // namespace dbus
 
 #endif  // DBUS_OBJECT_PROXY_H_