Add flag to enable syncfs directory support to about:flags.

webkit/fileapi/syncable/syncable_file_system_util.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 "webkit/fileapi/syncable/syncable_file_system_util.h"
 
 #include "base/command_line.h"
 #include "webkit/fileapi/external_mount_points.h"
 #include "webkit/fileapi/file_observers.h"
 #include "webkit/fileapi/file_system_context.h"
 #include "webkit/fileapi/file_system_util.h"
 #include "webkit/fileapi/sandbox_mount_point_provider.h"
 
 using fileapi::ExternalMountPoints;
 using fileapi::FileSystemContext;
 using fileapi::FileSystemURL;
 using fileapi::LocalFileSystemOperation;
 
 namespace sync_file_system {
 
 namespace {
 
 // A command switch to enable syncing directory operations in Sync FileSystem
 // API. (http://crbug.com/161442)
 // TODO(kinuko): this command-line switch should be temporary.
-const char kEnableSyncDirectoryOperation[]  = "enable-sync-directory-operation";
+const char kEnableSyncDirectoryOperation[]  =
+    "enable-syncfs-directory-operation";
 
 bool is_directory_operation_enabled = false;
 
 }
 
 bool RegisterSyncableFileSystem(const std::string& service_name) {
   return ExternalMountPoints::GetSystemInstance()->RegisterFileSystem(
       service_name, fileapi::kFileSystemTypeSyncable, base::FilePath());
 }
 
@@ skipping 63 matching lines @@
   is_directory_operation_enabled = flag;
 }
 
 bool IsSyncDirectoryOperationEnabled() {
   return is_directory_operation_enabled ||
       CommandLine::ForCurrentProcess()->HasSwitch(
           kEnableSyncDirectoryOperation);
 }
 
 }  // namespace sync_file_system