Move PathExists to base namespace.

chrome/browser/chromeos/drive/file_cache.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/chromeos/drive/file_cache.h"
 
 #include <vector>
 
 #include "base/file_util.h"
 #include "base/files/file_enumerator.h"
@@ skipping 684 matching lines @@
     free_space = free_disk_space_getter_->AmountOfFreeDiskSpace();
   else
     free_space = base::SysInfo::AmountOfFreeDiskSpace(path);
 
   // Subtract this as if this portion does not exist.
   free_space -= kMinFreeSpace;
   return (free_space >= num_bytes);
 }
 
 bool FileCache::ImportOldDB(const base::FilePath& old_db_path) {
-  if (!file_util::PathExists(old_db_path))  // Old DB is not there, do nothing.
+  if (!base::PathExists(old_db_path))  // Old DB is not there, do nothing.
     return false;
 
   // Copy all entries stored in the old DB.
   bool imported = false;
   {
     FileCacheMetadata old_data(blocking_task_runner_.get());
     if (old_data.Initialize(old_db_path) ==
         FileCacheMetadata::INITIALIZE_OPENED) {
       scoped_ptr<FileCacheMetadata::Iterator> it = old_data.GetIterator();
       for (; !it->IsAtEnd(); it->Advance()) {
@@ skipping 30 matching lines @@
                                     false,  // not recursive
                                     base::FileEnumerator::FILES);
     for (base::FilePath current = enumerator.Next(); !current.empty();
          current = enumerator.Next())
       base::Move(current, current.RemoveExtension());
   }
 }
 
 }  // namespace internal
 }  // namespace drive