base: Remove most uses of MessageLoopProxy

base/critical_closure.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_CRITICAL_CLOSURE_H_
 #define BASE_CRITICAL_CLOSURE_H_
 
 #include "base/callback.h"
 
 #if defined(OS_IOS)
@@ skipping 34 matching lines @@
 
 }  // namespace internal
 
 // Returns a closure (which may return a result, but must not require any extra
 // arguments) that will continue to run for a period of time when the
 // application goes to the background if possible on platforms where
 // applications don't execute while backgrounded, otherwise the original task is
 // returned.
 //
 // Example:
-//   file_message_loop_proxy_->PostTask(
+//   file_task_runner_->PostTask(
 //       FROM_HERE,
 //       MakeCriticalClosure(base::Bind(&WriteToDiskTask, path_, data)));
 //
 // Note new closures might be posted in this closure. If the new closures need
 // background running time, |MakeCriticalClosure| should be applied on them
 // before posting.
 #if defined(OS_IOS)
 template <typename R>
 Callback<R(void)> MakeCriticalClosure(const Callback<R(void)>& closure) {
   DCHECK(internal::IsMultiTaskingSupported());
   return base::Bind(&internal::CriticalClosure<R>::Run,
                     Owned(new internal::CriticalClosure<R>(closure)));
 }
 #else  // defined(OS_IOS)
 template <typename R>
 inline Callback<R(void)> MakeCriticalClosure(const Callback<R(void)>& closure) {
   // No-op for platforms where the application does not need to acquire
   // background time for closures to finish when it goes into the background.
   return closure;
 }
 #endif  // defined(OS_IOS)
 
 }  // namespace base
 
 #endif  // BASE_CRITICAL_CLOSURE_H_