Add explicit base to 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"
 
 namespace {
 
-FilePath GetFrameworksPath() {
+base::FilePath GetFrameworksPath() {
   // Start out with the path to the running executable.
-  FilePath path;
+  base::FilePath path;
   PathService::Get(base::FILE_EXE, &path);
 
   // Up to Contents.
   if (base::mac::IsBackgroundOnlyProcess()) {
     // The running executable is the helper. Go up five steps:
     // Contents/Frameworks/Helper.app/Contents/MacOS/Helper
     // ^ to here                                     ^ from here
     path = path.DirName().DirName().DirName().DirName().DirName();
   } else {
     // One step up to MacOS, another to Contents.
     path = path.DirName().DirName();
   }
   DCHECK_EQ(path.BaseName().value(), "Contents");
 
   // Go into the frameworks directory.
   return path.Append("Frameworks");
 }
 
 }  // namespace
 
 void OverrideFrameworkBundlePath() {
-  FilePath helper_path =
+  base::FilePath helper_path =
       GetFrameworksPath().Append("Content Shell Framework.framework");
 
   base::mac::SetOverrideFrameworkBundlePath(helper_path);
 }
 
 void OverrideChildProcessPath() {
-  FilePath helper_path = GetFrameworksPath().Append("Content Shell Helper.app")
+  base::FilePath helper_path =
+      GetFrameworksPath().Append("Content Shell Helper.app")
                                             .Append("Contents")
                                             .Append("MacOS")
                                             .Append("Content Shell Helper");
 
   PathService::Override(content::CHILD_PROCESS_EXE, helper_path);
 }
 
-FilePath GetResourcesPakFilePath() {
+base::FilePath GetResourcesPakFilePath() {
   NSString* pak_path =
       [base::mac::FrameworkBundle() pathForResource:@"content_shell"
                                              ofType:@"pak"];
 
   return FilePath([pak_path fileSystemRepresentation]);
 }