Move DBusClient stub implementations into separate files.

chromeos/dbus/sms_client.h

 // Copyright (c) 2012 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 CHROMEOS_DBUS_SMS_CLIENT_H_
 #define CHROMEOS_DBUS_SMS_CLIENT_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 17 matching lines @@
 // called from the origin thread (UI thread) which initializes the
 // DBusThreadManager instance.
 class CHROMEOS_EXPORT SMSClient : public DBusClient {
  public:
   typedef base::Callback<void(const base::DictionaryValue& sms)> GetAllCallback;
 
   virtual ~SMSClient();
 
   // Factory function, creates a new instance and returns ownership.
   // For normal usage, access the singleton via DBusThreadManager::Get().
-  static SMSClient* Create(DBusClientImplementationType type);
+  static SMSClient* Create();
 
   // Calls GetAll method.  |callback| is called after the method call succeeds.
   virtual void GetAll(const std::string& service_name,
                       const dbus::ObjectPath& object_path,
                       const GetAllCallback& callback) = 0;
 
  protected:
   // Create() should be used instead.
   SMSClient();
 
  private:
   DISALLOW_COPY_AND_ASSIGN(SMSClient);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROMEOS_DBUS_SMS_CLIENT_H_