Compositor thread plumbing for layout rectangle debug info.

cc/layers/layer.h

Index: cc/layers/layer.h
diff --git a/cc/layers/layer.h b/cc/layers/layer.h
index b552a35736cc05c64d8c8dd720597d7b9d1043b5..12a018eb7bd36eff20a63b62344ba9e4249c2fbb 100644
--- a/cc/layers/layer.h
+++ b/cc/layers/layer.h
@@ -33,6 +33,12 @@
 #include "ui/gfx/rect_f.h"
 #include "ui/gfx/transform.h"
 
+namespace base {
+namespace debug {
+class ConvertableToTraceFormat;
+}
+}
+
 namespace gfx {
 class BoxF;
 }
@@ -433,6 +439,8 @@ class CC_EXPORT Layer : public base::RefCounted<Layer>,
 
   virtual void RunMicroBenchmark(MicroBenchmark* benchmark);
 
+  virtual void SetDebugInfo(base::debug::ConvertableToTraceFormat*);

[enne (OOO), 2013/11/25 20:16:45]

style nit: parameters should be named

[chrishtr_gmail.com, 2013/11/25 22:48:25]

Done.

+
  protected:
   friend class LayerImpl;
   friend class TreeSynchronizer;
@@ -589,6 +597,8 @@ class CC_EXPORT Layer : public base::RefCounted<Layer>,
 
   DrawProperties<Layer> draw_properties_;
 
+  scoped_refptr<base::debug::ConvertableToTraceFormat> debug_info_;
+
   PaintProperties paint_properties_;
 
   DISALLOW_COPY_AND_ASSIGN(Layer);