mandoline: write this after lunch.

mandoline/ui/desktop_ui/browser_manager.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 MANDOLINE_UI_DESKTOP_UI_BROWSER_MANAGER_H_
 #define MANDOLINE_UI_DESKTOP_UI_BROWSER_MANAGER_H_
 
 #include <set>
 
 #include "components/mus/public/interfaces/window_tree_host.mojom.h"
 #include "mandoline/ui/desktop_ui/public/interfaces/launch_handler.mojom.h"
 #include "mojo/application/public/cpp/application_delegate.h"
 #include "mojo/application/public/cpp/application_impl.h"
 #include "mojo/application/public/cpp/connect.h"
 #include "mojo/common/weak_binding_set.h"
+#include "mojo/services/tracing/public/cpp/tracing_impl.h"
 #include "url/gurl.h"
 
 namespace mojo {
 class View;
 }
 
 namespace mandoline {
 
 class BrowserWindow;
 
@@ skipping 20 matching lines @@
   // Overridden from mojo::ApplicationDelegate:
   void Initialize(mojo::ApplicationImpl* app) override;
   bool ConfigureIncomingConnection(
       mojo::ApplicationConnection* connection) override;
 
   // Overridden from mojo::InterfaceFactory<LaunchHandler>:
   void Create(mojo::ApplicationConnection* connection,
               mojo::InterfaceRequest<LaunchHandler> request) override;
 
   mojo::ApplicationImpl* app_;
+  mojo::TracingImpl tracing_;
   mus::mojom::WindowTreeHostFactoryPtr host_factory_;
   mojo::WeakBindingSet<LaunchHandler> launch_handler_bindings_;
   std::set<BrowserWindow*> browsers_;
   const base::TimeTicks startup_ticks_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserManager);
 };
 
 }  // namespace mandoline
 
 #endif  // MANDOLINE_UI_DESKTOP_UI_BROWSER_MANAGER_H_