Add FilePath to base namespace.

chrome/browser/media_gallery/media_file_system_context.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_MEDIA_GALLERY_MEDIA_FILE_SYSTEM_CONTEXT_H_
 #define CHROME_BROWSER_MEDIA_GALLERY_MEDIA_FILE_SYSTEM_CONTEXT_H_
 
 // Manages isolated filesystem namespaces for media file systems.
 
 #include <string>
 
 #include "base/memory/ref_counted.h"
 #include "chrome/browser/media_gallery/scoped_mtp_device_map_entry.h"
 #include "webkit/fileapi/media/mtp_device_file_system_config.h"
 
+namespace base {
 class FilePath;
+}
 
 namespace chrome {
 
 class MediaFileSystemRegistry;
 
 class MediaFileSystemContext {
  public:
   virtual ~MediaFileSystemContext() {}
 
   // Register a media file system (filtered to media files) for |path| and
   // return the new file system id.
   virtual std::string RegisterFileSystemForMassStorage(
-      const std::string& device_id, const FilePath& path) = 0;
+      const std::string& device_id, const base::FilePath& path) = 0;
 
 #if defined(SUPPORT_MTP_DEVICE_FILESYSTEM)
   // Registers and returns the file system id for the MTP or PTP device
   // specified by |device_id| and |path|. Updates |entry| with the corresponding
   // ScopedMTPDeviceMapEntry object.
   virtual std::string RegisterFileSystemForMTPDevice(
-      const std::string& device_id, const FilePath& path,
+      const std::string& device_id, const base::FilePath& path,
       scoped_refptr<ScopedMTPDeviceMapEntry>* entry) = 0;
 #endif
 
   // Revoke the passed |fsid|.
   virtual void RevokeFileSystem(const std::string& fsid) = 0;
 
   // The MediaFileSystemRegistry that owns this context.
   virtual MediaFileSystemRegistry* GetMediaFileSystemRegistry() = 0;
 };
 
 }  // namespace
 
 #endif  // CHROME_BROWSER_MEDIA_GALLERY_MEDIA_FILE_SYSTEM_CONTEXT_H_