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

chrome/browser/chromeos/cros/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_UPDATE_LIBRARY_H_
-#define CHROME_BROWSER_CHROMEOS_CROS_UPDATE_LIBRARY_H_
-#pragma once
-
-#include <string>
-
-#include "third_party/cros/chromeos_update_engine.h"
-
-namespace chromeos {
-
-// This interface defines interaction with the ChromeOS update library APIs.
-// Classes can add themselves as observers. Users can get an instance of this
-// library class like this: chromeos::CrosLibrary::Get()->GetUpdateLibrary()
-class UpdateLibrary {
- public:
-  // TODO(seanparent): Should make the UpdateProgress type copyable.
-  // We need to copy it to bind it for a deferred notification.
-  // Modifying the cros library just for that, for a single use case,
-  // isn't worth it. Instead we define this a local Status struct that
-  // is copyable.
-  struct Status {
-    Status()
-        : status(UPDATE_STATUS_IDLE),
-          download_progress(0.0),
-          last_checked_time(0),
-          new_size(0) {
-    }
-
-    explicit Status(const UpdateProgress& o)
-        : status(o.status_),
-          download_progress(o.download_progress_),
-          last_checked_time(o.last_checked_time_),
-          new_version(o.new_version_),
-          new_size(o.new_size_) {
-    }
-
-    UpdateStatusOperation status;
-    double download_progress;   // 0.0 - 1.0
-    int64_t last_checked_time;  // As reported by std::time().
-    std::string new_version;
-    int64_t new_size;           // Valid during DOWNLOADING, in bytes.
-  };
-
-  class Observer {
-   public:
-    virtual ~Observer() {}
-
-    virtual void UpdateStatusChanged(const Status& status) = 0;
-  };
-
-  virtual ~UpdateLibrary() {}
-
-  virtual void Init() = 0;
-
-  virtual void AddObserver(Observer* observer) = 0;
-  virtual void RemoveObserver(Observer* observer) = 0;
-  virtual bool HasObserver(Observer* observer) = 0;
-
-  // Requests an update check and calls |callback| when completed.
-  virtual void RequestUpdateCheck(chromeos::UpdateCallback callback,
-                                  void* user_data) = 0;
-
-  // Reboots if update has been performed.
-  virtual void RebootAfterUpdate() = 0;
-
-  // Sets the release track (channel). |track| should look like
-  // "beta-channel" and "dev-channel". Returns true on success.
-  virtual void SetReleaseTrack(const std::string& track) = 0;
-
-  // Calls |callback| with the release track (channel). On error, calls
-  // |callback| with NULL.
-  virtual void GetReleaseTrack(chromeos::UpdateTrackCallback callback,
-                               void* user_data) = 0;
-
-  virtual const Status& status() const = 0;
-
-  // Factory function, creates a new instance and returns ownership.
-  // For normal usage, access the singleton via CrosLibrary::Get().
-  static UpdateLibrary* GetImpl(bool stub);
-};
-
-}  // namespace chromeos
-
-#endif  // CHROME_BROWSER_CHROMEOS_CROS_UPDATE_LIBRARY_H_