Make Tracing Service not use outgoing InterfaceProvider, update conventions

ash/mus/window_manager_application.h

 // Copyright 2015 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.
 
 #ifndef ASH_MUS_WINDOW_MANAGER_APPLICATION_H_
 #define ASH_MUS_WINDOW_MANAGER_APPLICATION_H_
 
 #include <stdint.h>
 
 #include <memory>
 #include <set>
 
 #include "ash/mus/window_manager_observer.h"
 #include "ash/public/interfaces/shelf_layout.mojom.h"
 #include "ash/public/interfaces/user_window_controller.mojom.h"
 #include "base/macros.h"
 #include "mash/session/public/interfaces/session.mojom.h"
 #include "mojo/public/cpp/bindings/binding.h"
 #include "mojo/public/cpp/bindings/binding_set.h"
 #include "services/shell/public/cpp/service.h"
-#include "services/tracing/public/cpp/tracing_impl.h"
+#include "services/tracing/public/cpp/provider.h"
 #include "services/ui/common/types.h"
 #include "services/ui/public/interfaces/accelerator_registrar.mojom.h"
 
 namespace views {
 class AuraInit;
 }
 
 namespace ui {
 class Event;
 class WindowTreeClient;
@@ skipping 50 matching lines @@
       mojo::InterfaceRequest<ui::mojom::AcceleratorRegistrar> request) override;
 
   // session::mojom::ScreenlockStateListener:
   void ScreenlockStateChanged(bool locked) override;
 
   // WindowManagerObserver:
   void OnRootWindowControllerAdded(RootWindowController* controller) override;
   void OnWillDestroyRootWindowController(
       RootWindowController* controller) override;
 
-  mojo::TracingImpl tracing_;
+  tracing::Provider tracing_;
 
   std::unique_ptr<views::AuraInit> aura_init_;
 
   // The |shelf_layout_| object is created once OnEmbed() is called. Until that
   // time |shelf_layout_requests_| stores pending interface requests.
   std::unique_ptr<ShelfLayoutImpl> shelf_layout_;
   mojo::BindingSet<mojom::ShelfLayout> shelf_layout_bindings_;
   std::vector<mojo::InterfaceRequest<mojom::ShelfLayout>>
       shelf_layout_requests_;
 
@@ skipping 14 matching lines @@
   mojo::Binding<mash::session::mojom::ScreenlockStateListener>
       screenlock_state_listener_binding_;
 
   DISALLOW_COPY_AND_ASSIGN(WindowManagerApplication);
 };
 
 }  // namespace mus
 }  // namespace ash
 
 #endif  // ASH_MUS_WINDOW_MANAGER_APPLICATION_H_