Reify view ownership as a message pipe.

mojo/ui/gl_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 MOJO_UI_GL_VIEW_H_
 #define MOJO_UI_GL_VIEW_H_
 
 #include "mojo/gpu/gl_context.h"
 #include "mojo/gpu/gl_context_owner.h"
 #include "mojo/ui/base_view.h"
 #include "mojo/ui/gl_renderer.h"
 
 namespace mojo {
 namespace ui {
 
 // Abstract base implementation of the View interface for simple applications
 // which use GL for rendering.  Subclasses must handle layout and provide
 // content for the scene.
 class GLView : public BaseView {
  public:
-  GLView(
-      mojo::ApplicationImpl* app_impl,
-      const std::string& label,
-      const mojo::ui::ViewProvider::CreateViewCallback& create_view_callback);
+  GLView(mojo::ApplicationImpl* app_impl,
+         mojo::InterfaceRequest<mojo::ui::ViewOwner> view_owner_request,
+         const std::string& label);
 
   ~GLView() override;
 
   // Gets the GL context, or null if none.
   const base::WeakPtr<mojo::GLContext>& gl_context() const {
     return gl_context_owner_.context();
   }
 
   // Gets the GL renderer.
   mojo::ui::GLRenderer* gl_renderer() { return &gl_renderer_; }
 
  private:
   mojo::GLContextOwner gl_context_owner_;
   mojo::ui::GLRenderer gl_renderer_;
 
   MOJO_DISALLOW_COPY_AND_ASSIGN(GLView);
 };
 
 }  // namespace ui
 }  // namespace mojo
 
 #endif  // MOJO_UI_GL_VIEW_H_