Debugging code to print layer tree

views/view.cc

 // Copyright (c) 2011 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 "views/view.h"
 
 #include <algorithm>
 
 #include "base/debug/trace_event.h"
 #include "base/logging.h"
@@ skipping 1763 matching lines @@
 // Accelerated painting --------------------------------------------------------
 
 void View::CreateLayer() {
   // A new layer is being created for the view. So all the layers of the
   // sub-tree can inherit the visibility of the corresponding view.
   for (int i = 0, count = child_count(); i < count; ++i)
     child_at(i)->UpdateChildLayerVisibility(true);
 
   layer_.reset(new ui::Layer(NULL));
   layer_->set_delegate(this);
+#if !defined(NDEBUG)
+  layer_->set_name(GetClassName());
+#endif
 
   UpdateParentLayers();
   UpdateLayerVisibility();
 
   // The new layer needs to be ordered in the layer tree according
   // to the view tree. Children of this layer were added in order
   // in UpdateParentLayers().
   if (parent())
     parent()->ReorderLayers();
 }
@@ skipping 273 matching lines @@
 
   OSExchangeData data;
   WriteDragData(press_pt, &data);
 
   // Message the RootView to do the drag and drop. That way if we're removed
   // the RootView can detect it and avoid calling us back.
   GetWidget()->RunShellDrag(this, data, drag_operations);
 }
 
 }  // namespace views