Create a RegisterViewAssociate method in ViewManager

services/ui/launcher/launcher_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_LAUNCHER_LAUNCHER_APP_H_
 #define SERVICES_UI_LAUNCHER_LAUNCHER_APP_H_
 
 #include <memory>
 #include <unordered_map>
 
 #include "mojo/common/binding_set.h"
 #include "mojo/common/tracing_impl.h"
 #include "mojo/public/cpp/application/application_delegate.h"
 #include "services/ui/launcher/launch_instance.h"
 #include "services/ui/launcher/launcher.mojom.h"
 
 namespace launcher {
 
 class LauncherApp : public mojo::ApplicationDelegate, public Launcher {
  public:
   LauncherApp();
   ~LauncherApp() override;
 
  private:
   // |ApplicationDelegate|:
   void Initialize(mojo::ApplicationImpl* app_impl) override;
+  void InitCompositor();
+  void InitViewManager();
+  void InitViewAssociates(const std::string& associate_urls_command_line_param);
   bool ConfigureIncomingConnection(
       mojo::ServiceProviderImpl* service_provider_impl) override;
 
   // |Launcher|:
   void Launch(const mojo::String& application_url) override;
 
   void OnLaunchTermination(uint32_t id);
 
+  void OnCompositorConnectionError();
+  void OnViewManagerConnectionError();
+  void OnViewAssociateConnectionError();
+
   mojo::ApplicationImpl* app_impl_;
   mojo::TracingImpl tracing_;
 
   mojo::BindingSet<Launcher> bindings_;
   std::unordered_map<uint32_t, std::unique_ptr<LaunchInstance>>
       launch_instances_;
+
   uint32_t next_id_;
 
+  mojo::gfx::composition::CompositorPtr compositor_;
+  mojo::ui::ViewManagerPtr view_manager_;
+  std::vector<mojo::ui::ViewAssociateOwnerPtr> view_associate_owners_;
+
   DISALLOW_COPY_AND_ASSIGN(LauncherApp);
 };
 
 }  // namespace launcher
 
 #endif  // SERVICES_UI_LAUNCHER_LAUNCHER_APP_H_