Replace Closure in TaskRunner::PostTask with OneShotCallback

base/task_runner_util.h

 // 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.
 
 #ifndef BASE_TASK_RUNNER_UTIL_H_
 #define BASE_TASK_RUNNER_UTIL_H_
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/logging.h"
 #include "base/task_runner.h"
 
 namespace base {
 
 namespace internal {
 
 // Adapts a function that produces a result via a return value to
 // one that returns via an output parameter.
 template <typename ReturnType>
-void ReturnAsParamAdapter(const Callback<ReturnType(void)>& func,
+void ReturnAsParamAdapter(OnceCallback<ReturnType()> func,
                           ReturnType* result) {
-  *result = func.Run();
+  *result = std::move(func).Run();
 }
 
 // Adapts a T* result to a callblack that expects a T.
 template <typename TaskReturnType, typename ReplyArgType>
-void ReplyAdapter(const Callback<void(ReplyArgType)>& callback,
+void ReplyAdapter(OnceCallback<void(ReplyArgType)> callback,
                   TaskReturnType* result) {
   // TODO(ajwong): Remove this conditional and add a DCHECK to enforce that
   // |reply| must be non-null in PostTaskAndReplyWithResult() below after
   // current code that relies on this API softness has been removed.
   // http://crbug.com/162712
   if (!callback.is_null())
-    callback.Run(std::move(*result));
+    std::move(callback).Run(std::move(*result));
 }
 
 }  // namespace internal
 
 // When you have these methods
 //
 //   R DoWorkAndReturn();
 //   void Callback(const R& result);
 //
 // and want to call them in a PostTaskAndReply kind of fashion where the
 // result of DoWorkAndReturn is passed to the Callback, you can use
 // PostTaskAndReplyWithResult as in this example:
 //
 // PostTaskAndReplyWithResult(
 //     target_thread_.task_runner(),
 //     FROM_HERE,
 //     Bind(&DoWorkAndReturn),
 //     Bind(&Callback));
 template <typename TaskReturnType, typename ReplyArgType>
+bool PostTaskAndReplyWithResult(TaskRunner* task_runner,
+                                const tracked_objects::Location& from_here,
+                                OnceCallback<TaskReturnType()> task,
+                                OnceCallback<void(ReplyArgType)> reply) {
+  TaskReturnType* result = new TaskReturnType();
+  return task_runner->PostTaskAndReply(
+      from_here, BindOnce(&internal::ReturnAsParamAdapter<TaskReturnType>,
+                          std::move(task), result),
+      BindOnce(&internal::ReplyAdapter<TaskReturnType, ReplyArgType>,
+               std::move(reply), base::Owned(result)));
+}
+
+template <typename TaskReturnType,
+          typename ReplyArgType,
+          internal::CopyMode task_copy_mode,
+          internal::RepeatMode task_repeat_mode,
+          internal::CopyMode reply_copy_mode,
+          internal::RepeatMode reply_repeat_mode>
 bool PostTaskAndReplyWithResult(
     TaskRunner* task_runner,
     const tracked_objects::Location& from_here,
-    const Callback<TaskReturnType(void)>& task,
-    const Callback<void(ReplyArgType)>& reply) {
-  TaskReturnType* result = new TaskReturnType();
-  return task_runner->PostTaskAndReply(
-      from_here,
-      base::Bind(&internal::ReturnAsParamAdapter<TaskReturnType>, task,
-                 result),
-      base::Bind(&internal::ReplyAdapter<TaskReturnType, ReplyArgType>, reply,
-                 base::Owned(result)));
+    Callback<TaskReturnType(), task_copy_mode, task_repeat_mode> task,
+    Callback<void(ReplyArgType), reply_copy_mode, reply_repeat_mode> reply) {
+  return PostTaskAndReplyWithResult(
+      task_runner, from_here,
+      OnceCallback<TaskReturnType()>(std::move(task)),
+      OnceCallback<void(ReplyArgType)>(std::move(reply)));
 }
 
 }  // namespace base
 
 #endif  // BASE_TASK_RUNNER_UTIL_H_