Move PathExists to base namespace.

chrome/browser/chromeos/drive/file_cache_metadata.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_metadata.h"
 
 #include "base/callback.h"
 #include "base/file_util.h"
 #include "base/files/file_enumerator.h"
 #include "base/metrics/histogram.h"
@@ skipping 77 matching lines @@
 }
 
 FileCacheMetadata::~FileCacheMetadata() {
   AssertOnSequencedWorkerPool();
 }
 
 FileCacheMetadata::InitializeResult FileCacheMetadata::Initialize(
     const base::FilePath& db_path) {
   AssertOnSequencedWorkerPool();
 
-  bool created = !file_util::PathExists(db_path);
+  bool created = !base::PathExists(db_path);
 
   leveldb::DB* level_db = NULL;
   leveldb::Options options;
   options.create_if_missing = true;
   leveldb::Status db_status = leveldb::DB::Open(options, db_path.AsUTF8Unsafe(),
                                                 &level_db);
 
   // Delete the db and scan the physical cache. This will fix a corrupt db, but
   // perhaps not other causes of failed DB::Open.
   DBOpenStatus uma_status = DB_OPEN_SUCCESS;
@@ skipping 72 matching lines @@
   return make_scoped_ptr(new Iterator(iter.Pass()));
 }
 
 void FileCacheMetadata::AssertOnSequencedWorkerPool() {
   DCHECK(!blocking_task_runner_.get() ||
          blocking_task_runner_->RunsTasksOnCurrentThread());
 }
 
 }  // namespace internal
 }  // namespace drive