mandoline: write this after lunch.

components/resource_provider/resource_provider_app.h

Index: components/resource_provider/resource_provider_app.h
diff --git a/components/resource_provider/resource_provider_app.h b/components/resource_provider/resource_provider_app.h
index b4c13dee1b8c82efe5d94995572a2d43066c9686..6b0a2389b53913d74415e379f8c5839d8e614cdc 100644
--- a/components/resource_provider/resource_provider_app.h
+++ b/components/resource_provider/resource_provider_app.h
@@ -12,6 +12,7 @@
 #include "mojo/application/public/cpp/interface_factory.h"
 #include "mojo/common/weak_binding_set.h"
 #include "mojo/public/cpp/bindings/binding.h"
+#include "mojo/services/tracing/public/cpp/tracing_impl.h"
 
 namespace mojo {
 class ApplicationImpl;
@@ -35,6 +36,8 @@ class ResourceProviderApp : public mojo::ApplicationDelegate,
   void Create(mojo::ApplicationConnection* connection,
               mojo::InterfaceRequest<ResourceProvider> request) override;
 
+  mojo::TracingImpl tracing_;
+
   mojo::WeakBindingSet<ResourceProvider> bindings_;
 
   // The name of the app that the resource provider code lives in. When using