HUD: Show first paint invalidation in red

cc/layers/layer.h

Index: cc/layers/layer.h
diff --git a/cc/layers/layer.h b/cc/layers/layer.h
index 3452e8b157b6b63477b20ff69b27deca5f8ee018..0780a39bca2a1077f6fe8f22366250e702a8fdd6 100644
--- a/cc/layers/layer.h
+++ b/cc/layers/layer.h
@@ -19,6 +19,7 @@
 #include "cc/base/scoped_ptr_vector.h"
 #include "cc/debug/micro_benchmark.h"
 #include "cc/layers/draw_properties.h"
+#include "cc/layers/layer_client.h"
 #include "cc/layers/layer_lists.h"
 #include "cc/layers/layer_position_constraint.h"
 #include "cc/layers/paint_properties.h"
@@ -368,7 +369,7 @@ class CC_EXPORT Layer : public base::RefCounted<Layer>,
   virtual void OnOutputSurfaceCreated() {}
   virtual bool IsSuitableForGpuRasterization() const;
 
-  virtual scoped_refptr<base::debug::ConvertableToTraceFormat> TakeDebugInfo();
+  virtual scoped_refptr<LayerDebugInfo> TakeDebugInfo();
 
   void SetLayerClient(LayerClient* client) { client_ = client; }