Remove use of deprecated MessageLoop methods in ui.

ui/views/widget/native_widget_aura.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 "ui/views/widget/native_widget_aura.h"
 
 #include "base/bind.h"
+#include "base/location.h"
 #include "base/memory/ptr_util.h"
+#include "base/single_thread_task_runner.h"
 #include "base/strings/string_util.h"
+#include "base/threading/thread_task_runner_handle.h"
 #include "build/build_config.h"
 #include "third_party/skia/include/core/SkRegion.h"
 #include "ui/aura/client/aura_constants.h"
 #include "ui/aura/client/capture_client.h"
 #include "ui/aura/client/cursor_client.h"
 #include "ui/aura/client/focus_client.h"
 #include "ui/aura/client/screen_position_client.h"
 #include "ui/aura/client/window_tree_client.h"
 #include "ui/aura/env.h"
 #include "ui/aura/window.h"
@@ skipping 438 matching lines @@
   // and ownership is WIDGET_OWNS_NATIVE_WIDGET.
   DCHECK(window_ ||
          ownership_ == Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET);
   if (window_) {
     window_->SuppressPaint();
     Hide();
     window_->SetProperty(aura::client::kModalKey, ui::MODAL_TYPE_NONE);
   }
 
   if (!close_widget_factory_.HasWeakPtrs()) {
-    base::MessageLoop::current()->PostTask(
-        FROM_HERE,
-        base::Bind(&NativeWidgetAura::CloseNow,
-                   close_widget_factory_.GetWeakPtr()));
+    base::ThreadTaskRunnerHandle::Get()->PostTask(
+        FROM_HERE, base::Bind(&NativeWidgetAura::CloseNow,
+                              close_widget_factory_.GetWeakPtr()));
   }
 }
 
 void NativeWidgetAura::CloseNow() {
   delete window_;
 }
 
 void NativeWidgetAura::Show() {
   ShowWithWindowState(ui::SHOW_STATE_NORMAL);
 }
@@ skipping 696 matching lines @@
     gfx::NativeView native_view) {
   aura::client::CaptureClient* capture_client =
       aura::client::GetCaptureClient(native_view->GetRootWindow());
   if (!capture_client)
     return nullptr;
   return capture_client->GetGlobalCaptureWindow();
 }
 
 }  // namespace internal
 }  // namespace views