Changes ownership of WindowTreeClient

services/navigation/view_impl.h

 // Copyright 2016 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_NAVIGATION_VIEW_IMPL_H_
 #define SERVICES_NAVIGATION_VIEW_IMPL_H_
 
 #include <memory>
 
 #include "base/macros.h"
@@ skipping 63 matching lines @@
   void UpdateTargetURL(content::WebContents* source, const GURL& url) override;
   gfx::Rect GetRootWindowResizerRect() const override;
 
   // content::NotificationObserver:
   void Observe(int type,
                const content::NotificationSource& source,
                const content::NotificationDetails& details) override;
 
   // ui::WindowTreeClientDelegate:
   void OnEmbed(ui::Window* root) override;
-  void OnDidDestroyClient(ui::WindowTreeClient* client) override;
+  void OnEmbedRootDestroyed(ui::Window* root) override;
+  void OnLostConnection(ui::WindowTreeClient* client) override;
   void OnPointerEventObserved(const ui::PointerEvent& event,
                               ui::Window* target) override;
 
   // views::WidgetDelegate:
   views::View* GetContentsView() override;
   views::Widget* GetWidget() override;
   const views::Widget* GetWidget() const override;
 
   std::unique_ptr<shell::Connector> connector_;
   mojo::StrongBinding<mojom::View> binding_;
   mojom::ViewClientPtr client_;
   std::unique_ptr<shell::ServiceContextRef> ref_;
 
+  std::unique_ptr<ui::WindowTreeClient> window_tree_client_;
+
   views::WebView* web_view_;
 
   std::unique_ptr<content::WebContents> web_contents_;
 
   content::NotificationRegistrar registrar_;
 
   std::unique_ptr<views::Widget> widget_;
 
   gfx::Size resizer_size_;
 
   DISALLOW_COPY_AND_ASSIGN(ViewImpl);
 };
 
 }  // navigation
 
 #endif  // SERVICES_NAVIGATION_VIEW_IMPL_H_