Remove use of deprecated MessageLoop methods in content.

content/browser/renderer_host/render_widget_host_impl.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 "content/browser/renderer_host/render_widget_host_impl.h"
 
 #include <math.h>
 
 #include <set>
 #include <tuple>
@@ skipping 2052 matching lines @@
   if (latency_info.FindLatency(ui::WINDOW_SNAPSHOT_FRAME_NUMBER_COMPONENT,
                                GetLatencyComponentId(),
                                &window_snapshot_component)) {
     int sequence_number = static_cast<int>(
         window_snapshot_component.sequence_number);
 #if defined(OS_MACOSX)
     // On Mac, when using CoreAnmation, there is a delay between when content
     // is drawn to the screen, and when the snapshot will actually pick up
     // that content. Insert a manual delay of 1/6th of a second (to simulate
     // 10 frames at 60 fps) before actually taking the snapshot.
-    base::MessageLoop::current()->PostDelayedTask(
+    base::ThreadTaskRunnerHandle::Get()->PostDelayedTask(
         FROM_HERE,
         base::Bind(&RenderWidgetHostImpl::WindowSnapshotReachedScreen,
-                   weak_factory_.GetWeakPtr(),
-                   sequence_number),
+                   weak_factory_.GetWeakPtr(), sequence_number),
         base::TimeDelta::FromSecondsD(1. / 6));
 #else
     WindowSnapshotReachedScreen(sequence_number);
 #endif
   }
 
   latency_tracker_.OnFrameSwapped(latency_info);
 }
 
 void RenderWidgetHostImpl::DidReceiveRendererFrame() {
@@ skipping 77 matching lines @@
   return delegate_ ? delegate_->GetRootBrowserAccessibilityManager() : NULL;
 }
 
 BrowserAccessibilityManager*
     RenderWidgetHostImpl::GetOrCreateRootBrowserAccessibilityManager() {
   return delegate_ ?
       delegate_->GetOrCreateRootBrowserAccessibilityManager() : NULL;
 }
 
 }  // namespace content