De-client tracing.TraceController interface

services/surfaces/surfaces_service_application.h

Index: services/surfaces/surfaces_service_application.h
diff --git a/services/surfaces/surfaces_service_application.h b/services/surfaces/surfaces_service_application.h
index e1ff43562a7ec09f22dd2f03398ad7901ace02af..fd7389dc3682d67b10f4fdbda687111f9249e551 100644
--- a/services/surfaces/surfaces_service_application.h
+++ b/services/surfaces/surfaces_service_application.h
@@ -8,6 +8,7 @@
 #include "base/macros.h"
 #include "base/timer/timer.h"
 #include "cc/surfaces/surface_manager.h"
+#include "mojo/common/tracing_impl.h"
 #include "mojo/public/cpp/application/application_delegate.h"
 #include "mojo/public/cpp/application/interface_factory.h"
 #include "mojo/services/surfaces/public/interfaces/surfaces_service.mojom.h"
@@ -58,6 +59,7 @@ class SurfacesServiceApplication
   uint32_t next_id_namespace_;
   cc::Display* display_;
   scoped_ptr<SurfacesScheduler> scheduler_;
+  mojo::TracingImpl tracing_;
 
   DISALLOW_COPY_AND_ASSIGN(SurfacesServiceApplication);
 };