Remove shutdown code from sky.

sky/viewer/document_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 SKY_VIEWER_DOCUMENT_VIEW_H_
 #define SKY_VIEWER_DOCUMENT_VIEW_H_
 
 #include "base/callback.h"
 #include "base/memory/weak_ptr.h"
 #include "mojo/public/cpp/application/lazy_interface_ptr.h"
@@ skipping 29 matching lines @@
 class LayerHost;
 
 class DocumentView : public blink::ServiceProvider,
                      public blink::WebViewClient,
                      public blink::WebFrameClient,
                      public sky::LayerClient,
                      public sky::LayerHostClient,
                      public mojo::ViewManagerDelegate,
                      public mojo::ViewObserver {
  public:
-  DocumentView(const base::Closure& destruction_callback,
-               mojo::ServiceProviderPtr provider,
+  DocumentView(mojo::ServiceProviderPtr provider,
                mojo::URLResponsePtr response,
                mojo::Shell* shell);
   virtual ~DocumentView();
 
   base::WeakPtr<DocumentView> GetWeakPtr();
 
   blink::WebView* web_view() const { return web_view_; }
   mojo::ServiceProvider* imported_services() const {
     return imported_services_.get();
   }
@@ skipping 47 matching lines @@
   void OnViewBoundsChanged(mojo::View* view,
                            const mojo::Rect& old_bounds,
                            const mojo::Rect& new_bounds) override;
   void OnViewFocusChanged(mojo::View* gained_focus,
                           mojo::View* lost_focus) override;
   void OnViewDestroyed(mojo::View* view) override;
   void OnViewInputEvent(mojo::View* view, const mojo::EventPtr& event) override;
 
   void Load(mojo::URLResponsePtr response);
 
-  base::Closure destruction_callback_;
   mojo::URLResponsePtr response_;
   mojo::ServiceProviderImpl exported_services_;
   scoped_ptr<mojo::ServiceProvider> imported_services_;
   mojo::Shell* shell_;
   mojo::LazyInterfacePtr<mojo::NavigatorHost> navigator_host_;
   blink::WebView* web_view_;
   mojo::View* root_;
   mojo::ViewManagerClientFactory view_manager_client_factory_;
   InspectorServiceFactory inspector_service_factory_;
   scoped_ptr<LayerHost> layer_host_;
   scoped_refptr<Layer> root_layer_;
   scoped_ptr<ScriptRunner> script_runner_;
   scoped_ptr<InspectorHostImpl> inspector_host_;
   scoped_ptr<inspector::InspectorBackendMojo> inspector_backend_;
   int debugger_id_;
 
   base::WeakPtrFactory<DocumentView> weak_factory_;
   DISALLOW_COPY_AND_ASSIGN(DocumentView);
 };
 
 }  // namespace sky
 
 #endif  // SKY_VIEWER_DOCUMENT_VIEW_H_