dbus: Remove unused GMock-ed clients.

chromeos/dbus/mock_permission_broker_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_MOCK_PERMISSION_BROKER_CLIENT_H_
-#define CHROMEOS_DBUS_MOCK_PERMISSION_BROKER_CLIENT_H_
-
-#include <string>
-
-#include "base/basictypes.h"
-#include "chromeos/dbus/permission_broker_client.h"
-#include "testing/gmock/include/gmock/gmock.h"
-
-namespace chromeos {
-
-class MockPermissionBrokerClient : public PermissionBrokerClient {
- public:
-  MockPermissionBrokerClient();
-  virtual ~MockPermissionBrokerClient();
-
-  MOCK_METHOD2(RequestPathAccess, void(const std::string& path,
-                                       const ResultCallback& callback));
-  MOCK_METHOD3(RequestUsbAccess, void(const uint16_t vendor_id,
-                                      const uint16_t product_id,
-                                      const ResultCallback& callback));
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(MockPermissionBrokerClient);
-};
-
-}  // namespace chromeos
-
-#endif  // CHROMEOS_DBUS_MOCK_PERMISSION_BROKER_CLIENT_H_