NOSUBMIT: Demonstrate accelerated layer painting problem in mus/mash

components/mus/public/cpp/lib/window.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 "components/mus/public/cpp/window.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <set>
@@ skipping 487 matching lines @@
     : connection_(connection),
       id_(id),
       parent_(nullptr),
       stacking_target_(nullptr),
       transient_parent_(nullptr),
       is_modal_(false),
       input_event_handler_(nullptr),
       viewport_metrics_(CreateEmptyViewportMetrics()),
       visible_(false),
       cursor_id_(mojom::Cursor::CURSOR_NULL),
-      drawn_(false) {}
+      drawn_(false) {
+  LOG(ERROR) << "JAMES new mus::Window";
+}
 
 WindowTreeClientImpl* Window::tree_client() {
   return static_cast<WindowTreeClientImpl*>(connection_);
 }
 
 void Window::SetSharedPropertyInternal(const std::string& name,
                                        const std::vector<uint8_t>* value) {
   if (!OwnsWindowOrIsRoot(this))
     return;
 
@@ skipping 319 matching lines @@
     notifier->NotifyWindowReordered();
 
   return true;
 }
 
 // static
 Window** Window::GetStackingTarget(Window* window) {
   return &window->stacking_target_;
 }
 }  // namespace mus