chromeos: Remove UpdateLibrary code, which is no longer used.

chrome/browser/chromeos/cros/mock_update_library.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 CHROME_BROWSER_CHROMEOS_CROS_MOCK_UPDATE_LIBRARY_H_
-#define CHROME_BROWSER_CHROMEOS_CROS_MOCK_UPDATE_LIBRARY_H_
-#pragma once
-
-#include "base/observer_list.h"
-#include "chrome/browser/chromeos/cros/update_library.h"
-#include "testing/gmock/include/gmock/gmock.h"
-
-namespace chromeos {
-
-class MockUpdateLibrary : public UpdateLibrary {
- public:
-  MockUpdateLibrary();
-  virtual ~MockUpdateLibrary();
-
-  MOCK_METHOD0(Init, void(void));
-  MOCK_METHOD1(AddObserver, void(Observer*));  // NOLINT
-  MOCK_METHOD1(RemoveObserver, void(Observer*));  // NOLINT
-  MOCK_METHOD1(HasObserver, bool(Observer*));
-  MOCK_METHOD2(RequestUpdateCheck, void(chromeos::UpdateCallback, void*));
-  MOCK_METHOD0(RebootAfterUpdate, void(void));
-  MOCK_METHOD1(SetReleaseTrack, void(const std::string&));
-  MOCK_METHOD2(GetReleaseTrack, void(chromeos::UpdateTrackCallback, void*));
-  MOCK_CONST_METHOD0(status, const Status&(void));
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(MockUpdateLibrary);
-};
-
-}  // namespace chromeos
-
-#endif  // CHROME_BROWSER_CHROMEOS_CROS_MOCK_UPDATE_LIBRARY_H_