Remove FileUtilProxy:DeleteFile().

base/files/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 "base/files/file_util_proxy.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/files/file_util.h"
 #include "base/location.h"
@@ skipping 30 matching lines @@
       callback.Run(error_, file_info_);
     }
   }
 
  private:
   File::Error error_;
   File::Info file_info_;
   DISALLOW_COPY_AND_ASSIGN(GetFileInfoHelper);
 };
 
-File::Error DeleteAdapter(const FilePath& file_path, bool recursive) {
-  if (!PathExists(file_path)) {
-    return File::FILE_ERROR_NOT_FOUND;
-  }
-  if (!base::DeleteFile(file_path, recursive)) {
-    if (!recursive && !base::IsDirectoryEmpty(file_path)) {
-      return File::FILE_ERROR_NOT_EMPTY;
-    }
-    return File::FILE_ERROR_FAILED;
-  }
-  return File::FILE_OK;
-}
-
 }  // namespace
 
 // Retrieves the information about a file. It is invalid to pass NULL for the
 // callback.
 bool FileUtilProxy::GetFileInfo(
     TaskRunner* task_runner,
     const FilePath& file_path,
     const GetFileInfoCallback& callback) {
   GetFileInfoHelper* helper = new GetFileInfoHelper;
   return task_runner->PostTaskAndReply(
       FROM_HERE,
       Bind(&GetFileInfoHelper::RunWorkForFilePath,
            Unretained(helper), file_path),
       Bind(&GetFileInfoHelper::Reply, Owned(helper), callback));
 }
 
 // static
-bool FileUtilProxy::DeleteFile(TaskRunner* task_runner,
-                               const FilePath& file_path,
-                               bool recursive,
-                               const StatusCallback& callback) {
-  return base::PostTaskAndReplyWithResult(
-      task_runner, FROM_HERE,
-      Bind(&DeleteAdapter, file_path, recursive),
-      callback);
-}
-
-// static
 bool FileUtilProxy::Touch(
     TaskRunner* task_runner,
     const FilePath& file_path,
     const Time& last_access_time,
     const Time& last_modified_time,
     const StatusCallback& callback) {
   return base::PostTaskAndReplyWithResult(
       task_runner,
       FROM_HERE,
       Bind(&TouchFile, file_path, last_access_time, last_modified_time),
       Bind(&CallWithTranslatedParameter, callback));
 }
 
 }  // namespace base