Reify view ownership as a message pipe.

mojo/ui/ganesh_view.h

 // Copyright 2014 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 MOJO_UI_GANESH_VIEW_H_
 #define MOJO_UI_GANESH_VIEW_H_
 
 #include "mojo/gpu/gl_context.h"
 #include "mojo/gpu/gl_context_owner.h"
 #include "mojo/skia/ganesh_context.h"
 #include "mojo/ui/base_view.h"
 #include "mojo/ui/ganesh_renderer.h"
 
 class SkSurface;
 
 namespace mojo {
 namespace ui {
 
 // Abstract base implementation of the View interface for simple applications
 // which use Ganesh for rendering.  Subclasses must handle layout and provide
 // content for the scene.
 class GaneshView : public BaseView {
  public:
-  GaneshView(
-      mojo::ApplicationImpl* app_impl,
-      const std::string& label,
-      const mojo::ui::ViewProvider::CreateViewCallback& create_view_callback);
+  GaneshView(mojo::ApplicationImpl* app_impl,
+             mojo::InterfaceRequest<mojo::ui::ViewOwner> view_owner_request,
+             const std::string& label);
 
   ~GaneshView() override;
 
   // Gets the GL context, or null if none.
   const base::WeakPtr<mojo::GLContext>& gl_context() const {
     return gl_context_owner_.context();
   }
 
   // Gets the Ganesh context.
   mojo::skia::GaneshContext* ganesh_context() { return &ganesh_context_; }
 
   // Gets the Ganesh renderer.
   mojo::ui::GaneshRenderer* ganesh_renderer() { return &ganesh_renderer_; }
 
  private:
   mojo::GLContextOwner gl_context_owner_;
   mojo::skia::GaneshContext ganesh_context_;
   mojo::ui::GaneshRenderer ganesh_renderer_;
 
   DISALLOW_COPY_AND_ASSIGN(GaneshView);
 };
 
 }  // namespace ui
 }  // namespace mojo
 
 #endif  // MOJO_UI_GANESH_VIEW_H_