Remove remaining calls to deprecated MessageLoop methods on Mac.

chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.mm

 // Copyright 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.
 
 #import "chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #import "base/mac/mac_util.h"
-#include "base/message_loop/message_loop.h"
 #include "base/stl_util.h"
 #include "base/strings/string_util.h"
 #include "base/strings/sys_string_conversions.h"
 #include "base/strings/utf_string_conversions.h"
+#include "base/threading/thread_task_runner_handle.h"
 #include "chrome/app/chrome_command_ids.h"
 #import "chrome/browser/app_controller_mac.h"
 #include "chrome/browser/command_updater.h"
 #include "chrome/browser/defaults.h"
 #include "chrome/browser/extensions/api/omnibox/omnibox_api.h"
 #include "chrome/browser/extensions/api/tabs/tabs_api.h"
 #include "chrome/browser/extensions/extension_action.h"
 #include "chrome/browser/extensions/location_bar_controller.h"
 #include "chrome/browser/extensions/tab_helper.h"
 #include "chrome/browser/profiles/profile.h"
@@ skipping 123 matching lines @@
   // Disconnect from cell in case it outlives us.
   [[field_ cell] clearDecorations];
 
   zoom::ZoomEventManager::GetForBrowserContext(profile())
       ->RemoveZoomEventManagerObserver(this);
 }
 
 void LocationBarViewMac::ShowFirstRunBubble() {
   // We need the browser window to be shown before we can show the bubble, but
   // we get called before that's happened.
-  base::MessageLoop::current()->PostTask(
+  base::ThreadTaskRunnerHandle::Get()->PostTask(
       FROM_HERE, base::Bind(&LocationBarViewMac::ShowFirstRunBubbleInternal,
                             weak_ptr_factory_.GetWeakPtr()));
 }
 
 GURL LocationBarViewMac::GetDestinationURL() const {
   return destination_url();
 }
 
 WindowOpenDisposition LocationBarViewMac::GetWindowOpenDisposition() const {
   return disposition();
@@ skipping 684 matching lines @@
     OnDecorationsChanged();
 }
 
 std::vector<NSView*> LocationBarViewMac::GetDecorationAccessibilityViews() {
   std::vector<LocationBarDecoration*> decorations = GetDecorations();
   std::vector<NSView*> views;
   for (const auto& decoration : decorations)
     views.push_back(decoration->GetAccessibilityView());
   return views;
 }