Pass Callback by value on PostTaskAndReply family

ios/web/public/web_thread.h

 // Copyright 2014 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 IOS_WEB_PUBLIC_WEB_THREAD_H_
 #define IOS_WEB_PUBLIC_WEB_THREAD_H_
 
 #include <string>
+#include <utility>
 
-#include "base/callback_forward.h"
+#include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/single_thread_task_runner.h"
 #include "base/task_runner_util.h"
 
 namespace base {
 class MessageLoop;
@@ skipping 88 matching lines @@
                                   const tracked_objects::Location& from_here,
                                   const base::Closure& task);
   static bool PostNonNestableDelayedTask(
       ID identifier,
       const tracked_objects::Location& from_here,
       const base::Closure& task,
       base::TimeDelta delay);
 
   static bool PostTaskAndReply(ID identifier,
                                const tracked_objects::Location& from_here,
-                               const base::Closure& task,
-                               const base::Closure& reply);
+                               base::Closure task,
+                               base::Closure reply);
 
   template <typename ReturnType, typename ReplyArgType>
   static bool PostTaskAndReplyWithResult(
       ID identifier,
       const tracked_objects::Location& from_here,
-      const base::Callback<ReturnType(void)>& task,
-      const base::Callback<void(ReplyArgType)>& reply) {
+      base::Callback<ReturnType()> task,
+      base::Callback<void(ReplyArgType)> reply) {
     scoped_refptr<base::SingleThreadTaskRunner> task_runner =
         GetTaskRunnerForThread(identifier);
-    return base::PostTaskAndReplyWithResult(task_runner.get(), from_here, task,
-                                            reply);
+    return base::PostTaskAndReplyWithResult(task_runner.get(), from_here,
+                                            std::move(task), std::move(reply));
   }
 
   template <class T>
   static bool DeleteSoon(ID identifier,
                          const tracked_objects::Location& from_here,
                          const T* object) {
     return GetTaskRunnerForThread(identifier)->DeleteSoon(from_here, object);
   }
 
   // Simplified wrappers for posting to the blocking thread pool. Use this
@@ skipping 14 matching lines @@
   // unique string), you can access the sequenced worker pool directly via
   // GetBlockingPool().
   //
   // If you need to PostTaskAndReplyWithResult, use
   // base::PostTaskAndReplyWithResult() with GetBlockingPool() as the task
   // runner.
   static bool PostBlockingPoolTask(const tracked_objects::Location& from_here,
                                    const base::Closure& task);
   static bool PostBlockingPoolTaskAndReply(
       const tracked_objects::Location& from_here,
-      const base::Closure& task,
-      const base::Closure& reply);
+      base::Closure task,
+      base::Closure reply);
   static bool PostBlockingPoolSequencedTask(
       const std::string& sequence_token_name,
       const tracked_objects::Location& from_here,
       const base::Closure& task);
 
   // Returns the thread pool used for blocking file I/O. Use this object to
   // perform random blocking operations such as file writes.
   static base::SequencedWorkerPool* GetBlockingPool() WARN_UNUSED_RESULT;
 
   // Callable on any thread.  Returns whether the given well-known thread is
@@ skipping 81 matching lines @@
  private:
   friend class WebThreadImpl;
 
   WebThread() {}
   DISALLOW_COPY_AND_ASSIGN(WebThread);
 };
 
 }  // namespace web
 
 #endif  // IOS_WEB_PUBLIC_WEB_THREAD_H_