Rewrite apps::SavedDevicesService as extensions::DevicePermissionsManager.

apps/saved_devices_service.h

-// Copyright 2014 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 APPS_SAVED_DEVICES_SERVICE_H_
-#define APPS_SAVED_DEVICES_SERVICE_H_
-
-#include <map>
-#include <set>
-#include <string>
-#include <vector>
-
-#include "base/memory/ref_counted.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/stl_util.h"
-#include "base/strings/string16.h"
-#include "base/threading/thread_checker.h"
-#include "components/keyed_service/core/keyed_service.h"
-#include "content/public/browser/notification_observer.h"
-#include "content/public/browser/notification_registrar.h"
-#include "device/usb/usb_device.h"
-
-class Profile;
-
-namespace base {
-class Value;
-}
-
-namespace extensions {
-class Extension;
-}
-
-namespace apps {
-
-// Represents a device that a user has given an app permission to access. It
-// will be persisted to disk (in the Preferences file) and so should remain
-// serializable.
-struct SavedDeviceEntry {
-  SavedDeviceEntry(uint16_t vendor_id,
-                   uint16_t product_id,
-                   const base::string16& serial_number);
-
-  base::Value* ToValue() const;
-
-  // The vendor ID of this device.
-  uint16_t vendor_id;
-
-  // The product ID of this device.
-  uint16_t product_id;
-
-  // The serial number (possibly alphanumeric) of this device.
-  base::string16 serial_number;
-};
-
-// Tracks the devices that apps have retained access to both while running and
-// when suspended.
-class SavedDevicesService : public KeyedService,
-                            public content::NotificationObserver {
- public:
-  // Tracks the devices that a particular extension has retained access to.
-  // Unlike SavedDevicesService the functions of this class can be called from
-  // the FILE thread.
-  class SavedDevices : device::UsbDevice::Observer {
-   public:
-    bool IsRegistered(scoped_refptr<device::UsbDevice> device) const;
-    void RegisterDevice(scoped_refptr<device::UsbDevice> device,
-                        /* optional */ base::string16* serial_number);
-
-   private:
-    friend class SavedDevicesService;
-
-    SavedDevices(Profile* profile, const std::string& extension_id);
-    virtual ~SavedDevices();
-
-    // device::UsbDevice::Observer
-    virtual void OnDisconnect(scoped_refptr<device::UsbDevice> device) OVERRIDE;
-
-    Profile* profile_;
-    const std::string extension_id_;
-
-    // Devices with serial numbers are written to the prefs file.
-    std::vector<SavedDeviceEntry> persistent_devices_;
-    // Other devices are ephemeral devices and cleared when the extension host
-    // is destroyed.
-    std::set<scoped_refptr<device::UsbDevice> > ephemeral_devices_;
-
-    DISALLOW_COPY_AND_ASSIGN(SavedDevices);
-  };
-
-  explicit SavedDevicesService(Profile* profile);
-  virtual ~SavedDevicesService();
-
-  static SavedDevicesService* Get(Profile* profile);
-
-  // Returns the SavedDevices for |extension_id|, creating it if necessary.
-  SavedDevices* GetOrInsert(const std::string& extension_id);
-
-  std::vector<SavedDeviceEntry> GetAllDevices(
-      const std::string& extension_id) const;
-
-  // Clears the SavedDevices for |extension_id|.
-  void Clear(const std::string& extension_id);
-
- private:
-  // content::NotificationObserver.
-  virtual void Observe(int type,
-                       const content::NotificationSource& source,
-                       const content::NotificationDetails& details) OVERRIDE;
-
-  // Returns the SavedDevices for |extension_id| or NULL if one does not exist.
-  SavedDevices* Get(const std::string& extension_id) const;
-
-  std::map<std::string, SavedDevices*> extension_id_to_saved_devices_;
-  Profile* profile_;
-  content::NotificationRegistrar registrar_;
-  base::ThreadChecker thread_checker_;
-
-  DISALLOW_COPY_AND_ASSIGN(SavedDevicesService);
-};
-
-}  // namespace apps
-
-#endif  // APPS_SAVED_DEVICES_SERVICE_H_