Move chrome.power API from chrome/ to extensions/.

chrome/browser/extensions/api/power/power_api_manager.h

-// Copyright (c) 2013 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_EXTENSIONS_API_POWER_POWER_API_MANAGER_H_
-#define CHROME_BROWSER_EXTENSIONS_API_POWER_POWER_API_MANAGER_H_
-
-#include <map>
-#include <string>
-
-#include "base/callback.h"
-#include "base/memory/scoped_ptr.h"
-#include "chrome/common/extensions/api/power.h"
-#include "content/public/browser/notification_observer.h"
-#include "content/public/browser/notification_registrar.h"
-#include "content/public/browser/power_save_blocker.h"
-#include "extensions/browser/browser_context_keyed_api_factory.h"
-#include "extensions/browser/extension_registry_observer.h"
-
-namespace content {
-class BrowserContext;
-}
-
-namespace extensions {
-
-// Handles calls made via the chrome.power API. There is a separate instance of
-// this class for each profile, as requests are tracked by extension ID, but a
-// regular and incognito profile will share the same instance.
-// TODO(derat): Move this to power_api.h and rename it to PowerApi.
-class PowerApiManager : public BrowserContextKeyedAPI,
-                        public content::NotificationObserver,
-                        public extensions::ExtensionRegistryObserver {
- public:
-  typedef base::Callback<scoped_ptr<content::PowerSaveBlocker>(
-      content::PowerSaveBlocker::PowerSaveBlockerType,
-      const std::string&)> CreateBlockerFunction;
-
-  static PowerApiManager* Get(content::BrowserContext* context);
-
-  // BrowserContextKeyedAPI implementation.
-  static BrowserContextKeyedAPIFactory<PowerApiManager>* GetFactoryInstance();
-
-  // Adds an extension lock at |level| for |extension_id|, replacing the
-  // extension's existing lock, if any.
-  void AddRequest(const std::string& extension_id, api::power::Level level);
-
-  // Removes an extension lock for an extension. Calling this for an
-  // extension id without a lock will do nothing.
-  void RemoveRequest(const std::string& extension_id);
-
-  // Replaces the function that will be called to create PowerSaveBlocker
-  // objects.  Passing an empty callback will revert to the default.
-  void SetCreateBlockerFunctionForTesting(CreateBlockerFunction function);
-
-  // Overridden from content::NotificationObserver.
-  virtual void Observe(int type,
-                       const content::NotificationSource& source,
-                       const content::NotificationDetails& details) OVERRIDE;
-
-  // Overridden from extensions::ExtensionRegistryObserver.
-  virtual void OnExtensionUnloaded(content::BrowserContext* browser_context,
-                                   const Extension* extension,
-                                   UnloadedExtensionInfo::Reason reason)
-      OVERRIDE;
-
- private:
-  friend class BrowserContextKeyedAPIFactory<PowerApiManager>;
-
-  explicit PowerApiManager(content::BrowserContext* context);
-  virtual ~PowerApiManager();
-
-  // Updates |power_save_blocker_| and |current_level_| after iterating
-  // over |extension_levels_|.
-  void UpdatePowerSaveBlocker();
-
-  // BrowserContextKeyedAPI implementation.
-  static const char* service_name() { return "PowerApiManager"; }
-  static const bool kServiceRedirectedInIncognito = true;
-  static const bool kServiceIsCreatedWithBrowserContext = false;
-  virtual void Shutdown() OVERRIDE;
-
-  content::BrowserContext* browser_context_;
-
-  content::NotificationRegistrar registrar_;
-
-  // Function that should be called to create PowerSaveBlocker objects.
-  // Tests can change this to record what would've been done instead of
-  // actually changing the system power-saving settings.
-  CreateBlockerFunction create_blocker_function_;
-
-  scoped_ptr<content::PowerSaveBlocker> power_save_blocker_;
-
-  // Current level used by |power_save_blocker_|.  Meaningless if
-  // |power_save_blocker_| is NULL.
-  api::power::Level current_level_;
-
-  // Map from extension ID to the corresponding level for each extension
-  // that has an outstanding request.
-  typedef std::map<std::string, api::power::Level> ExtensionLevelMap;
-  ExtensionLevelMap extension_levels_;
-
-  DISALLOW_COPY_AND_ASSIGN(PowerApiManager);
-};
-
-}  // namespace extensions
-
-#endif  // CHROME_BROWSER_EXTENSIONS_API_POWER_POWER_API_MANAGER_H_