Move PathExists to base namespace.

net/disk_cache/simple/simple_backend_impl.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_backend_impl.h"
 
 #include <algorithm>
 #include <cstdlib>
 
 #include "base/bind.h"
@@ skipping 76 matching lines @@
 // There is a convention among disk cache backends: looking at the magic in the
 // file "index" it should be sufficient to determine if the cache belongs to the
 // currently running backend. The Simple Backend stores its index in the file
 // "the-real-index" (see simple_index.cc) and the file "index" only signifies
 // presence of the implementation's magic and version. There are two reasons for
 // that:
 // 1. Absence of the index is itself not a fatal error in the Simple Backend
 // 2. The Simple Backend has pickled file format for the index making it hacky
 //    to have the magic in the right place.
 bool FileStructureConsistent(const base::FilePath& path) {
-  if (!file_util::PathExists(path) && !file_util::CreateDirectory(path)) {
+  if (!base::PathExists(path) && !file_util::CreateDirectory(path)) {
     LOG(ERROR) << "Failed to create directory: " << path.LossyDisplayName();
     return false;
   }
   const base::FilePath fake_index = path.AppendASCII("index");
   base::PlatformFileError error;
   base::PlatformFile fake_index_file = base::CreatePlatformFile(
       fake_index,
       base::PLATFORM_FILE_OPEN | base::PLATFORM_FILE_READ,
       NULL,
       &error);
@@ skipping 415 matching lines @@
     const CompletionCallback& callback,
     int error_code) {
   if (error_code == net::ERR_FAILED) {
     OpenNextEntry(iter, entry, callback);
     return;
   }
   CallCompletionCallback(callback, error_code);
 }
 
 }  // namespace disk_cache