Do not use overlays when VR shell is enabled.

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 655 matching lines @@
     return;
   }
 
   std::unique_ptr<ResizeParams> params(new ResizeParams);
   if (!GetResizeParams(params.get()))
     return;
 
   bool width_changed =
       !old_resize_params_ ||
       old_resize_params_->new_size.width() != params->new_size.width();
+
+  LOG(ERROR) << "===amp=== sending resize message, in vr = " << params->screen_info.in_vr;
   if (Send(new ViewMsg_Resize(routing_id_, *params))) {
     resize_ack_pending_ = params->needs_resize_ack;
     old_resize_params_.swap(params);
   }
 
   if (delegate_)
     delegate_->RenderWidgetWasResized(this, width_changed);
 }
 
 void RenderWidgetHostImpl::GotFocus() {
@@ skipping 1530 matching lines @@
   return delegate_ ? delegate_->GetRootBrowserAccessibilityManager() : NULL;
 }
 
 BrowserAccessibilityManager*
     RenderWidgetHostImpl::GetOrCreateRootBrowserAccessibilityManager() {
   return delegate_ ?
       delegate_->GetOrCreateRootBrowserAccessibilityManager() : NULL;
 }
 
 }  // namespace content