Remove ViewProvider.CreateView()'s exposed_services.

examples/shadows/shadows_app.h

 // Copyright 2016 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 EXAMPLES_SHADOWS_SHADOWS_APP_H_
 #define EXAMPLES_SHADOWS_SHADOWS_APP_H_
 
 #include "mojo/ui/view_provider_app.h"
 
 namespace examples {
 
 class ShadowsApp : public mojo::ui::ViewProviderApp {
  public:
   ShadowsApp();
   ~ShadowsApp() override;
 
   void CreateView(
       const std::string& connection_url,
       mojo::InterfaceRequest<mojo::ui::ViewOwner> view_owner_request,
-      mojo::InterfaceRequest<mojo::ServiceProvider> services,
-      mojo::InterfaceHandle<mojo::ServiceProvider> exposed_services) override;
+      mojo::InterfaceRequest<mojo::ServiceProvider> services) override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ShadowsApp);
 };
 
 }  // namespace examples
 
 #endif  // EXAMPLES_SHADOWS_SHADOWS_APP_H_