Move PathExists to base namespace.

net/disk_cache/simple/simple_index_file.cc

 // Copyright (c) 2013 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 "net/disk_cache/simple/simple_index_file.h"
 
 #include <vector>
 
 #include "base/file_util.h"
 #include "base/files/file_enumerator.h"
@@ skipping 147 matching lines @@
 }
 
 // static
 void SimpleIndexFile::SyncLoadIndexEntries(
     const base::FilePath& index_file_path,
     scoped_refptr<base::SingleThreadTaskRunner> response_thread,
     const IndexCompletionCallback& completion_callback) {
   // TODO(felipeg): probably could load a stale index and use it for something.
   scoped_ptr<SimpleIndex::EntrySet> index_file_entries;
 
-  const bool index_file_exists = file_util::PathExists(index_file_path);
+  const bool index_file_exists = base::PathExists(index_file_path);
 
   // Only load if the index is not stale.
   const bool index_stale = IsIndexFileStale(index_file_path);
   if (!index_stale) {
     const base::TimeTicks start = base::TimeTicks::Now();
     index_file_entries = SyncLoadFromDisk(index_file_path);
     UMA_HISTOGRAM_TIMES("SimpleCache.IndexLoadTime",
                         base::TimeTicks::Now() - start);
     UMA_HISTOGRAM_COUNTS("SimpleCache.IndexEntriesLoaded",
                          index_file_entries ? index_file_entries->size() : 0);
@@ skipping 201 matching lines @@
   if (!simple_util::GetMTime(index_filename, &index_mtime))
     return true;
   // Index file last_modified must be equal to the directory last_modified since
   // the last operation we do is ReplaceFile in the
   // SimpleIndexFile::WriteToDisk().
   // If not true, we need to restore the index.
   return index_mtime < dir_mtime;
 }
 
 }  // namespace disk_cache