Replace FilePath with base::FilePath.

content/shell/paths_mac.mm

 // 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.
 
 #include "content/shell/paths_mac.h"
 
 #include "base/mac/bundle_locations.h"
 #include "base/mac/foundation_util.h"
 #include "base/path_service.h"
 #include "content/public/common/content_paths.h"
@@ skipping 38 matching lines @@
                                             .Append("Content Shell Helper");
 
   PathService::Override(content::CHILD_PROCESS_EXE, helper_path);
 }
 
 base::FilePath GetResourcesPakFilePath() {
   NSString* pak_path =
       [base::mac::FrameworkBundle() pathForResource:@"content_shell"
                                              ofType:@"pak"];
 
-  return FilePath([pak_path fileSystemRepresentation]);
+  return base::FilePath([pak_path fileSystemRepresentation]);
 }