Add FilePath to base namespace.

content/public/browser/download_item.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.
 //
 // Each download is represented by a DownloadItem, and all DownloadItems
 // are owned by the DownloadManager which maintains a global list of all
 // downloads. DownloadItems are created when a user initiates a download,
 // and exist for the duration of the browser life time.
 //
 // Download observers:
@@ skipping 10 matching lines @@
 #include <string>
 #include <vector>
 
 #include "base/file_path.h"
 #include "base/string16.h"
 #include "base/supports_user_data.h"
 #include "content/public/browser/download_danger_type.h"
 #include "content/public/browser/download_interrupt_reasons.h"
 #include "content/public/common/page_transition_types.h"
 
-class FilePath;
 class GURL;
 
 namespace base {
+class FilePath;
 class Time;
 class TimeDelta;
 }
 
 namespace content {
 
 class BrowserContext;
 class DownloadId;
 class DownloadManager;
 class WebContents;
@@ skipping 271 matching lines @@
   // return |name|. Has no effect on the final target filename.
   virtual void SetDisplayName(const FilePath& name) = 0;
 
   // Debug/testing -------------------------------------------------------------
   virtual std::string DebugString(bool verbose) const = 0;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_DOWNLOAD_ITEM_H_