Fix CrOS FileManagerBrowserTest with scheduler enabled

content/renderer/render_widget.cc

Index: content/renderer/render_widget.cc
diff --git a/content/renderer/render_widget.cc b/content/renderer/render_widget.cc
index 1f1627271570eef18804e19b273304d829493b61..f3e5a62786140b62f69e66cc9cb1a0c6fa96fb85 100644
--- a/content/renderer/render_widget.cc
+++ b/content/renderer/render_widget.cc
@@ -835,7 +835,7 @@ void RenderWidget::OnClose() {
   // If there is a Send call on the stack, then it could be dangerous to close
   // now.  Post a task that only gets invoked when there are no nested message
   // loops.
-  base::MessageLoop::current()->PostNonNestableTask(
+  RenderThread::Get()->GetTaskRunner()->PostNonNestableTask(
       FROM_HERE, base::Bind(&RenderWidget::Close, this));
 
   // Balances the AddRef taken when we called AddRoute.
@@ -1507,7 +1507,7 @@ void RenderWidget::closeWidgetSoon() {
   // could be closed before the JS finishes executing.  So instead, post a
   // message back to the message loop, which won't run until the JS is
   // complete, and then the Close message can be sent.
-  base::MessageLoop::current()->PostTask(
+  RenderThread::Get()->GetTaskRunner()->PostTask(
       FROM_HERE, base::Bind(&RenderWidget::DoDeferredClose, this));
 }