Regularize ownerships and lifecycle for storage monitor platform classes.

chrome/browser/storage_monitor/removable_device_notifications_linux.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.
 
 // RemovableDeviceNotificationsLinux listens for mount point changes, notifies
 // listeners about the addition and deletion of media devices, and
 // answers queries about mounted devices.
 
 #ifndef CHROME_BROWSER_STORAGE_MONITOR_REMOVABLE_DEVICE_NOTIFICATIONS_LINUX_H_
 #define CHROME_BROWSER_STORAGE_MONITOR_REMOVABLE_DEVICE_NOTIFICATIONS_LINUX_H_
@@ skipping 21 matching lines @@
 // Gets device information given a |device_path|. On success, fills in
 // |unique_id|, |name|, |removable| and |partition_size_in_bytes|.
 typedef void (*GetDeviceInfoFunc)(const base::FilePath& device_path,
                                   std::string* unique_id,
                                   string16* name,
                                   bool* removable,
                                   uint64* partition_size_in_bytes);
 
 namespace chrome {
 
+class MediaTransferProtocolDeviceObserverLinux;
+
 class RemovableDeviceNotificationsLinux
     : public RemovableStorageNotifications,
       public base::RefCountedThreadSafe<RemovableDeviceNotificationsLinux,
           content::BrowserThread::DeleteOnFileThread> {
  public:
   // Should only be called by browser start up code.  Use GetInstance() instead.
   explicit RemovableDeviceNotificationsLinux(const base::FilePath& path);
 
   // Must be called for RemovableDeviceNotificationsLinux to work.
   void Init();
@@ skipping 82 matching lines @@
   // Keep in mind on Linux, a device can be mounted at multiple mount points,
   // and multiple devices can be mounted at a mount point.
   MountMap mount_info_map_;
 
   // Because a device can be mounted to multiple places, we only want to
   // notify about one of them. If (and only if) that one is unmounted, we need
   // to notify about it's departure and notify about another one of it's mount
   // points.
   MountPriorityMap mount_priority_map_;
 
+  scoped_ptr<MediaTransferProtocolDeviceObserverLinux>
+      media_transfer_protocol_device_observer_;
+
   DISALLOW_COPY_AND_ASSIGN(RemovableDeviceNotificationsLinux);
 };
 
 }  // namespace chrome
 
 #endif  // CHROME_BROWSER_STORAGE_MONITOR_REMOVABLE_DEVICE_NOTIFICATIONS_LINUX_H_