Remove all remaining traces of MessageLoopProxy.

chrome/browser/extensions/api/page_capture/page_capture_api.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/api/page_capture/page_capture_api.h"
 
 #include <limits>
 #include <memory>
 
 #include "base/bind.h"
@@ skipping 88 matching lines @@
       base::Bind(&PageCaptureSaveAsMHTMLFunction::TemporaryFileCreated, this,
                  success));
 }
 
 void PageCaptureSaveAsMHTMLFunction::TemporaryFileCreated(bool success) {
   if (BrowserThread::CurrentlyOn(BrowserThread::IO)) {
     if (success) {
       // Setup a ShareableFileReference so the temporary file gets deleted
       // once it is no longer used.
       mhtml_file_ = ShareableFileReference::GetOrCreate(
-          mhtml_path_,
-          ShareableFileReference::DELETE_ON_FINAL_RELEASE,
-          BrowserThread::GetMessageLoopProxyForThread(BrowserThread::FILE)
-              .get());
+          mhtml_path_, ShareableFileReference::DELETE_ON_FINAL_RELEASE,
+          BrowserThread::GetTaskRunnerForThread(BrowserThread::FILE).get());
     }
     BrowserThread::PostTask(
         BrowserThread::UI, FROM_HERE,
         base::Bind(&PageCaptureSaveAsMHTMLFunction::TemporaryFileCreated, this,
                    success));
     return;
   }
 
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   if (!success) {
@@ skipping 72 matching lines @@
                                     GetProfile(),
                                     include_incognito(),
                                     &browser,
                                     NULL,
                                     &web_contents,
                                     NULL)) {
     return NULL;
   }
   return web_contents;
 }