Reify view ownership as a message pipe.

examples/ui/spinning_cube/spinning_cube_view.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 EXAMPLES_UI_SPINNING_CUBE_SPINNING_CUBE_VIEW_H_
 #define EXAMPLES_UI_SPINNING_CUBE_SPINNING_CUBE_VIEW_H_
 
 #include <memory>
 
 #include "examples/spinning_cube/spinning_cube.h"
 #include "mojo/ui/choreographer.h"
 #include "mojo/ui/gl_view.h"
 #include "mojo/ui/input_handler.h"
 
 namespace examples {
 
 class SpinningCubeView : public mojo::ui::GLView,
                          public mojo::ui::ChoreographerDelegate,
                          public mojo::ui::InputListener {
  public:
   SpinningCubeView(
       mojo::ApplicationImpl* app_impl,
-      const mojo::ui::ViewProvider::CreateViewCallback& create_view_callback);
+      mojo::InterfaceRequest<mojo::ui::ViewOwner> view_owner_request);
 
   ~SpinningCubeView() override;
 
  private:
   // |GLView|:
   void OnLayout(mojo::ui::ViewLayoutParamsPtr layout_params,
                 mojo::Array<uint32_t> children_needing_layout,
                 const OnLayoutCallback& callback) override;
 
   // |ChoreographerDelegate|:
@@ skipping 17 matching lines @@
   MojoTimeTicks drag_start_time_ = 0u;
 
   base::WeakPtrFactory<SpinningCubeView> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(SpinningCubeView);
 };
 
 }  // namespace examples
 
 #endif  // EXAMPLES_UI_SPINNING_CUBE_SPINNING_CUBE_VIEW_H_