Move PathIsWritable, DirectoryExists, ContentsEqual, and TextContentsEqual to the base namespace.

content/browser/renderer_host/pepper/pepper_flash_file_message_filter.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 "content/browser/renderer_host/pepper/pepper_flash_file_message_filter.h"
 
 #include "base/bind.h"
 #include "base/file_util.h"
 #include "base/files/file_enumerator.h"
 #include "base/threading/sequenced_worker_pool.h"
@@ skipping 227 matching lines @@
   return PP_OK;
 }
 
 int32_t PepperFlashFileMessageFilter::OnCreateTemporaryFile(
     ppapi::host::HostMessageContext* context) {
   ppapi::PepperFilePath dir_path(
       ppapi::PepperFilePath::DOMAIN_MODULE_LOCAL, base::FilePath());
   base::FilePath validated_dir_path = ValidateAndConvertPepperFilePath(
       dir_path, kReadPermissions | kWritePermissions);
   if (validated_dir_path.empty() ||
-      (!file_util::DirectoryExists(validated_dir_path) &&
+      (!base::DirectoryExists(validated_dir_path) &&
        !file_util::CreateDirectory(validated_dir_path))) {
     return ppapi::PlatformFileErrorToPepperError(
         base::PLATFORM_FILE_ERROR_ACCESS_DENIED);
   }
 
   base::FilePath file_path;
   if (!file_util::CreateTemporaryFileInDir(validated_dir_path, &file_path)) {
     return ppapi::PlatformFileErrorToPepperError(
         base::PLATFORM_FILE_ERROR_FAILED);
   }
@@ skipping 41 matching lines @@
         file_path = plugin_data_directory_.Append(pepper_path.path());
       break;
     default:
       NOTREACHED();
       break;
   }
   return file_path;
 }
 
 }  // namespace content