Move PathIsWritable, DirectoryExists, ContentsEqual, and TextContentsEqual to the 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 15 matching lines @@
 #include "net/disk_cache/simple/simple_index_file.h"
 #include "net/disk_cache/simple/simple_synchronous_entry.h"
 #include "net/disk_cache/simple/simple_util.h"
 
 using base::Closure;
 using base::FilePath;
 using base::MessageLoopProxy;
 using base::SequencedWorkerPool;
 using base::SingleThreadTaskRunner;
 using base::Time;
-using file_util::DirectoryExists;
+using base::DirectoryExists;
 using file_util::CreateDirectory;
 
 namespace {
 
 // Maximum number of concurrent worker pool threads, which also is the limit
 // on concurrent IO (as we use one thread per IO request).
 const int kDefaultMaxWorkerThreads = 50;
 
 const char kThreadNamePrefix[] = "SimpleCacheWorker";
 
@@ skipping 476 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