chrome/browser: Remove use of MessageLoopProxy and deprecated MessageLoop APIs

chrome/browser/printing/print_job_worker.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 "chrome/browser/printing/print_job_worker.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/callback.h"
 #include "base/compiler_specific.h"
+#include "base/location.h"
 #include "base/message_loop/message_loop.h"
+#include "base/single_thread_task_runner.h"
+#include "base/thread_task_runner_handle.h"
 #include "base/values.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/printing/print_job.h"
 #include "chrome/grit/generated_resources.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/web_contents.h"
 #include "printing/print_job_constants.h"
@@ skipping 279 matching lines @@
     // We have enough information to initialize page_number_.
     page_number_.Init(document_->settings(), page_count);
   }
   DCHECK_NE(page_number_, PageNumber::npos());
 
   while (true) {
     // Is the page available?
     scoped_refptr<PrintedPage> page = document_->GetPage(page_number_.ToInt());
     if (!page.get()) {
       // We need to wait for the page to be available.
-      base::MessageLoop::current()->PostDelayedTask(
+      base::ThreadTaskRunnerHandle::Get()->PostDelayedTask(
           FROM_HERE,
           base::Bind(&PrintJobWorker::OnNewPage, weak_factory_.GetWeakPtr()),
           base::TimeDelta::FromMilliseconds(500));
       break;
     }
     // The page is there, print it.
     SpoolPage(page.get());
     ++page_number_;
     if (page_number_ == PageNumber::npos()) {
       OnDocumentDone();
@@ skipping 109 matching lines @@
                               document_,
                               scoped_refptr<PrintedPage>()));
   Cancel();
 
   // Makes sure the variables are reinitialized.
   document_ = NULL;
   page_number_ = PageNumber::npos();
 }
 
 }  // namespace printing