Compositor thread plumbing for layout rectangle debug info.

webkit/renderer/compositor_bindings/web_layer_impl.h

Index: webkit/renderer/compositor_bindings/web_layer_impl.h
diff --git a/webkit/renderer/compositor_bindings/web_layer_impl.h b/webkit/renderer/compositor_bindings/web_layer_impl.h
index abccf8f1581a801d179c02f55d0aefb790db7636..e189a70998c6d63deddeb6b6d5e5249ce8890646 100644
--- a/webkit/renderer/compositor_bindings/web_layer_impl.h
+++ b/webkit/renderer/compositor_bindings/web_layer_impl.h
@@ -35,6 +35,12 @@ class WebLayerClient;
 struct WebFloatRect;
 }
 
+namespace base {
+namespace debug {
+class ConvertableToTraceFormat;
+}
+}
+
 namespace webkit {
 
 class WebToCCAnimationDelegateAdapter;
@@ -125,6 +131,8 @@ class WebLayerImpl : public blink::WebLayer, public cc::LayerClient {
 
   // LayerClient implementation.
   virtual std::string DebugName() OVERRIDE;
+  virtual scoped_refptr<base::debug::ConvertableToTraceFormat>
+      TakeDebugInfo() OVERRIDE;
 
   virtual void setScrollParent(blink::WebLayer* parent);
   virtual void setClipParent(blink::WebLayer* parent);