Pass Callback to TaskRunner by value and consume it on invocation (1)

base/critical_closure_internal_ios.mm

 // 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.
 
 #include "base/critical_closure.h"
 
 #import <UIKit/UIKit.h>
 
 namespace base {
 namespace internal {
 
 bool IsMultiTaskingSupported() {
   return [[UIDevice currentDevice] isMultitaskingSupported];
 }
 
-CriticalClosure::CriticalClosure(const Closure& closure) : closure_(closure) {}
+CriticalClosure::CriticalClosure(Closure closure)
+    : closure_(std::move(closure)) {}
 
 CriticalClosure::~CriticalClosure() {}
 
 void CriticalClosure::Run() {
   closure_.Run();
 }
 
 }  // namespace internal
 }  // namespace base