[chrome/browser/extensions] Replace MessageLoopProxy usage with ThreadTaskRunnerHandle

chrome/browser/extensions/startup_helper.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/extensions/startup_helper.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
+#include "base/single_thread_task_runner.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/extensions/webstore_startup_installer.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/extensions/chrome_extensions_client.h"
 #include "components/crx_file/id_util.h"
 #include "content/public/browser/browser_thread.h"
@@ skipping 144 matching lines @@
   }
 
   void FinishOnUIThread() {
     CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
     if (run_loop_->running())
       run_loop_->Quit();
   }
 
   void StartOnFileThread() {
     CHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
-    scoped_refptr<base::MessageLoopProxy> file_thread_proxy =
+    scoped_refptr<base::SingleThreadTaskRunner> file_task_runner =
         BrowserThread::GetMessageLoopProxyForThread(BrowserThread::FILE);
 
     scoped_refptr<SandboxedUnpacker> unpacker(
         new SandboxedUnpacker(crx_file_,
                               Manifest::INTERNAL,
                               0, /* no special creation flags */
                               temp_dir_,
-                              file_thread_proxy.get(),
+                              file_task_runner.get(),
                               this));
     unpacker->Start();
   }
 
   // The file being validated.
   const CRXFileInfo& crx_file_;
 
   // The temporary directory where the sandboxed unpacker will do work.
   const base::FilePath& temp_dir_;
 
@@ skipping 131 matching lines @@
     LOG(ERROR) << "InstallFromWebstore failed with error: " << helper.error();
   return helper.success();
 }
 
 StartupHelper::~StartupHelper() {
   if (pack_job_.get())
     pack_job_->ClearClient();
 }
 
 }  // namespace extensions