HUD: Show first paint invalidation in red

ui/compositor/layer.cc

Index: ui/compositor/layer.cc
diff --git a/ui/compositor/layer.cc b/ui/compositor/layer.cc
index 83912f30f9aed0ebbf60e7d7977a8ae4af9a8e6d..c81da9c8095e43a3b8f95121450fbd4c3387fdc1 100644
--- a/ui/compositor/layer.cc
+++ b/ui/compositor/layer.cc
@@ -733,22 +733,23 @@ void Layer::SetForceRenderSurface(bool force) {
   cc_layer_->SetForceRenderSurface(force_render_surface_);
 }
 
-class LayerDebugInfo : public base::debug::ConvertableToTraceFormat {
+class UILayerDebugInfo : public cc::LayerDebugInfo {
  public:
-  explicit LayerDebugInfo(std::string name) : name_(name) { }
+  explicit UILayerDebugInfo(std::string name) : name_(name) {}
   virtual void AppendAsTraceFormat(std::string* out) const OVERRIDE {
     base::DictionaryValue dictionary;
     dictionary.SetString("layer_name", name_);
     base::JSONWriter::Write(&dictionary, out);
   }
+  virtual bool IncludesFirstPaintInvalidation() const OVERRIDE { return false; }
 
  private:
-  virtual ~LayerDebugInfo() { }
+  virtual ~UILayerDebugInfo() {}
   std::string name_;
 };
 
-scoped_refptr<base::debug::ConvertableToTraceFormat> Layer::TakeDebugInfo() {
-  return new LayerDebugInfo(name_);
+scoped_refptr<cc::LayerDebugInfo> Layer::TakeDebugInfo() {
+  return new UILayerDebugInfo(name_);
 }
 
 void Layer::OnAnimationStarted(const cc::AnimationEvent& event) {