Cleanup: Updating FileSystemFileUtil comments

webkit/fileapi/file_system_file_util_proxy.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/file_system_file_util_proxy.h"
 
 #include "base/bind.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop_proxy.h"
 #include "webkit/fileapi/cross_file_util_helper.h"
@@ skipping 226 matching lines @@
     const FileSystemPath& path,
     const ReadDirectoryCallback& callback) {
   ReadDirectoryHelper* helper = new ReadDirectoryHelper;
   return message_loop_proxy->PostTaskAndReply(
         FROM_HERE,
         Bind(&ReadDirectoryHelper::RunWork, Unretained(helper),
              file_util, context, path),
         Bind(&ReadDirectoryHelper::Reply, Owned(helper), callback));
 }
 
-// Touches a file by calling |file_util|'s FileSystemFileUtil::Touch
-// on the given |message_loop_proxy|.
+// static
 bool FileSystemFileUtilProxy::Touch(
     MessageLoopProxy* message_loop_proxy,
     FileSystemOperationContext* context,
     FileSystemFileUtil* file_util,
     const FileSystemPath& path,
     const base::Time& last_access_time,
     const base::Time& last_modified_time,
     const StatusCallback& callback) {
   return base::FileUtilProxy::RelayFileTask(
       message_loop_proxy, FROM_HERE,
@@ skipping 11 matching lines @@
     int64 length,
     const StatusCallback& callback) {
   return base::FileUtilProxy::RelayFileTask(
       message_loop_proxy, FROM_HERE,
       base::Bind(&FileSystemFileUtil::Truncate, base::Unretained(file_util),
                  context, path, length),
       callback);
 }
 
 }  // namespace fileapi