Remove use of deprecated MessageLoop methods in content.

content/browser/frame_host/render_widget_host_view_child_frame.cc

 // Copyright 2014 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 "content/browser/frame_host/render_widget_host_view_child_frame.h"
 
 #include <algorithm>
 #include <utility>
 #include <vector>
 
+#include "base/location.h"
 #include "base/memory/ptr_util.h"
+#include "base/single_thread_task_runner.h"
+#include "base/threading/thread_task_runner_handle.h"
 #include "build/build_config.h"
 #include "cc/output/copy_output_request.h"
 #include "cc/output/copy_output_result.h"
 #include "cc/surfaces/surface.h"
 #include "cc/surfaces/surface_factory.h"
 #include "cc/surfaces/surface_manager.h"
 #include "cc/surfaces/surface_sequence.h"
 #include "content/browser/accessibility/browser_accessibility_manager.h"
 #include "content/browser/browser_plugin/browser_plugin_guest.h"
 #include "content/browser/compositor/surface_utils.h"
@@ skipping 260 matching lines @@
     SetCrossProcessFrameConnector(nullptr);
   }
 
   // We notify our observers about shutdown here since we are about to release
   // host_ and do not want any event calls coming from
   // RenderWidgetHostInputEventRouter afterwards.
   NotifyObserversAboutShutdown();
 
   host_->SetView(nullptr);
   host_ = nullptr;
-  base::MessageLoop::current()->DeleteSoon(FROM_HERE, this);
+  base::ThreadTaskRunnerHandle::Get()->DeleteSoon(FROM_HERE, this);
 }
 
 void RenderWidgetHostViewChildFrame::SetTooltipText(
     const base::string16& tooltip_text) {
   frame_connector_->GetRootRenderWidgetHostView()->SetTooltipText(tooltip_text);
 }
 
 void RenderWidgetHostViewChildFrame::SelectionChanged(
     const base::string16& text,
     size_t offset,
@@ skipping 383 matching lines @@
 
 bool RenderWidgetHostViewChildFrame::IsChildFrameForTesting() const {
   return true;
 }
 
 cc::SurfaceId RenderWidgetHostViewChildFrame::SurfaceIdForTesting() const {
   return surface_id_;
 };
 
 }  // namespace content