Add FilePath to base namespace.

chrome/browser/system_monitor/portable_device_watcher_win.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.
 
 #ifndef CHROME_BROWSER_SYSTEM_MONITOR_PORTABLE_DEVICE_WATCHER_WIN_H_
 #define CHROME_BROWSER_SYSTEM_MONITOR_PORTABLE_DEVICE_WATCHER_WIN_H_
 
 #include <portabledeviceapi.h>
 
 #include <map>
 #include <string>
 #include <vector>
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "base/string16.h"
 #include "chrome/browser/system_monitor/removable_storage_notifications.h"
 
 namespace base {
 class SequencedTaskRunner;
 }
 
-class FilePath;
-
 namespace chrome {
 
 namespace test {
 class TestPortableDeviceWatcherWin;
 }
 
 // This class watches the portable device mount points and sends notifications
 // about the attached/detached media transfer protocol (MTP) devices.
 // This is a singleton class instantiated by
 // RemovableDeviceNotificationsWindowWin. This class is created, destroyed and
@@ skipping 98 matching lines @@
 
   // Used by |media_task_runner_| to create cancelable callbacks.
   base::WeakPtrFactory<PortableDeviceWatcherWin> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PortableDeviceWatcherWin);
 };
 
 }  // namespace chrome
 
 #endif  // CHROME_BROWSER_SYSTEM_MONITOR_PORTABLE_DEVICE_WATCHER_WIN_H_