Create a RegisterViewAssociate method in ViewManager

services/ui/view_manager/view_manager_app.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 SERVICES_UI_VIEW_MANAGER_VIEW_MANAGER_APP_H_
 #define SERVICES_UI_VIEW_MANAGER_VIEW_MANAGER_APP_H_
 
 #include <memory>
 
 #include "base/macros.h"
@@ skipping 12 matching lines @@
   ViewManagerApp();
   ~ViewManagerApp() override;
 
  private:
   // |ApplicationDelegate|:
   void Initialize(mojo::ApplicationImpl* app_impl) override;
   bool ConfigureIncomingConnection(
       mojo::ServiceProviderImpl* service_provider_impl) override;
 
   void OnCompositorConnectionError();
-  void OnAssociateConnectionError(const std::string& url);
 
   void Shutdown();
 
   mojo::ApplicationImpl* app_impl_;
   mojo::TracingImpl tracing_;
 
   mojo::StrongBindingSet<mojo::ui::ViewManager> view_managers_;
   std::unique_ptr<ViewRegistry> registry_;
 
   DISALLOW_COPY_AND_ASSIGN(ViewManagerApp);
 };
 
 }  // namespace view_manager
 
 #endif  // SERVICES_UI_VIEW_MANAGER_VIEW_MANAGER_APP_H_