Add tracing service and make the shell+sky_viewer+services talk to it

mojo/services/surfaces/surfaces_service_application.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "mojo/services/surfaces/surfaces_service_application.h"
 
 #include "cc/surfaces/display.h"
 #include "mojo/application/application_runner_chromium.h"
+#include "mojo/common/tracing_impl.h"
 #include "mojo/public/c/system/main.h"
 #include "mojo/services/surfaces/surfaces_service_impl.h"
 
 namespace mojo {
 
 SurfacesServiceApplication::SurfacesServiceApplication()
     : tick_interval_(base::TimeDelta::FromMilliseconds(17)),
       next_id_namespace_(1u),
       display_(NULL),
       draw_timer_(false, false) {
 }
 
 SurfacesServiceApplication::~SurfacesServiceApplication() {
 }
 
+void SurfacesServiceApplication::Initialize(ApplicationImpl* app) {
+  TracingImpl::Create(app);
+}
+
 bool SurfacesServiceApplication::ConfigureIncomingConnection(
     ApplicationConnection* connection) {
   connection->AddService(this);
   return true;
 }
 
 void SurfacesServiceApplication::Create(
     ApplicationConnection* connection,
     InterfaceRequest<SurfacesService> request) {
   new SurfacesServiceImpl(&manager_, &next_id_namespace_, this, request.Pass());
@@ skipping 22 matching lines @@
   if (display_ == display)
     SetDisplay(nullptr);
 }
 
 }  // namespace mojo
 
 MojoResult MojoMain(MojoHandle shell_handle) {
   mojo::ApplicationRunnerChromium runner(new mojo::SurfacesServiceApplication);
   return runner.Run(shell_handle);
 }