De-client tracing.TraceController interface

services/fake_surfaces/fake_surfaces_service_application.h

Index: services/fake_surfaces/fake_surfaces_service_application.h
diff --git a/services/fake_surfaces/fake_surfaces_service_application.h b/services/fake_surfaces/fake_surfaces_service_application.h
index e807b16b1b4f30726b3228e551bfdad6bd185cf1..4a946800ea0d25588102cf77981be2b381af57f0 100644
--- a/services/fake_surfaces/fake_surfaces_service_application.h
+++ b/services/fake_surfaces/fake_surfaces_service_application.h
@@ -6,6 +6,7 @@
 #define FAKE_SERVICES_SURFACES_SURFACES_SERVICE_APPLICATION_H_
 
 #include "base/macros.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"
@@ -39,6 +40,7 @@ class FakeSurfacesServiceApplication
 
  private:
   uint32_t next_id_namespace_;
+  mojo::TracingImpl tracing_;
 
   DISALLOW_COPY_AND_ASSIGN(FakeSurfacesServiceApplication);
 };