Debugging code to print layer tree

ui/gfx/compositor/layer.h

 // 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.
 
 #ifndef UI_GFX_COMPOSITOR_LAYER_H_
 #define UI_GFX_COMPOSITOR_LAYER_H_
 #pragma once
 
+#include <string>
 #include <vector>
 
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebContentLayerClient.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebLayer.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebLayerClient.h"
 #include "ui/gfx/rect.h"
@@ skipping 126 matching lines @@
   // See description in View for details
   void SetFillsBoundsOpaquely(bool fills_bounds_opaquely);
   bool fills_bounds_opaquely() const { return fills_bounds_opaquely_; }
 
   // Returns the invalid rectangle. That is, the region of the layer that needs
   // to be repainted. This is exposed for testing and isn't generally useful.
   const gfx::Rect& invalid_rect() const { return invalid_rect_; }
 
   const gfx::Rect& hole_rect() const {  return hole_rect_; }
 
+  const std::string& name() const { return name_; }
+  void set_name(const std::string& name) { name_ = name; }
+
   // The compositor.
   const Compositor* compositor() const { return compositor_; }
   Compositor* compositor() { return compositor_; }
 
   const ui::Texture* texture() const { return texture_.get(); }
 
   // |texture| cannot be NULL, and this function cannot be called more than
   // once.
   // TODO(beng): This can be removed from the API when we are in a
   //             single-compositor world.
@@ skipping 130 matching lines @@
 
   gfx::Rect hole_rect_;
 
   gfx::Rect invalid_rect_;
 
   // If true the layer is always up to date.
   bool layer_updated_externally_;
 
   float opacity_;
 
+  std::string name_;
+
   LayerDelegate* delegate_;
 
   scoped_ptr<LayerAnimator> animator_;
 
 #if defined(USE_WEBKIT_COMPOSITOR)
   WebKit::WebLayer web_layer_;
   bool web_layer_is_accelerated_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(Layer);
 };
 
 }  // namespace ui
 
 #endif  // UI_GFX_COMPOSITOR_LAYER_H_