Move PathIsWritable, DirectoryExists, ContentsEqual, and TextContentsEqual to the base namespace.

chrome/browser/importer/firefox3_importer.cc

 // 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 "chrome/browser/importer/firefox3_importer.h"
 
 #include <set>
 
 #include "base/file_util.h"
 #include "base/files/file_enumerator.h"
@@ skipping 413 matching lines @@
 
 #if defined(OS_POSIX)
   // Ubuntu-flavored Firefox3 supports locale-specific search engines via
   // locale-named subdirectories. They fall back to en-US.
   // See http://crbug.com/53899
   // TODO(jshin): we need to make sure our locale code matches that of
   // Firefox.
   DCHECK(!locale_.empty());
   base::FilePath locale_app_path = app_path.AppendASCII(locale_);
   base::FilePath default_locale_app_path = app_path.AppendASCII("en-US");
-  if (file_util::DirectoryExists(locale_app_path))
+  if (base::DirectoryExists(locale_app_path))
     app_path = locale_app_path;
-  else if (file_util::DirectoryExists(default_locale_app_path))
+  else if (base::DirectoryExists(default_locale_app_path))
     app_path = default_locale_app_path;
 #endif
 
   // Get search engine definition from file system.
   base::FileEnumerator engines(app_path, false, base::FileEnumerator::FILES);
   for (base::FilePath engine_path = engines.Next();
        !engine_path.value().empty(); engine_path = engines.Next()) {
     std::string file_data;
     file_util::ReadFileToString(file, &file_data);
     search_engine_data->push_back(file_data);
@@ skipping 135 matching lines @@
 
       if (!ReencodeFavicon(&data[0], data.size(), &usage.png_data))
         continue;  // Unable to decode.
 
       usage.urls = i->second;
       favicons->push_back(usage);
     }
     s.Reset(true);
   }
 }