Remove shutdown code from sky.

sky/viewer/document_view.cc

 // 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.
 
 #include "sky/viewer/document_view.h"
 
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/message_loop/message_loop_proxy.h"
 #include "base/single_thread_task_runner.h"
@@ skipping 53 matching lines @@
     default:
       return mojo::TARGET_DEFAULT;
   }
 }
 
 }  // namespace
 
 static int s_next_debugger_id = 1;
 
 DocumentView::DocumentView(
-    const base::Closure& destruction_callback,
     mojo::ServiceProviderPtr provider,
     mojo::URLResponsePtr response,
     mojo::Shell* shell)
-    : destruction_callback_(destruction_callback),
-      response_(response.Pass()),
+    : response_(response.Pass()),
       shell_(shell),
       web_view_(NULL),
       root_(NULL),
       view_manager_client_factory_(shell_, this),
       inspector_service_factory_(this),
       debugger_id_(s_next_debugger_id++),
       weak_factory_(this) {
   exported_services_.AddService(&view_manager_client_factory_);
   mojo::WeakBindToPipe(&exported_services_, provider.PassMessagePipe());
 }
 
 DocumentView::~DocumentView() {
   if (web_view_)
     web_view_->close();
   if (root_)
     root_->RemoveObserver(this);
-  destruction_callback_.Run();
 }
 
 base::WeakPtr<DocumentView> DocumentView::GetWeakPtr() {
   return weak_factory_.GetWeakPtr();
 }
 
 void DocumentView::OnEmbed(
     mojo::ViewManager* view_manager,
     mojo::View* root,
     mojo::ServiceProviderImpl* exported_services,
@@ skipping 130 matching lines @@
   if (root_ == lost_focus) {
     web_view_->setFocus(false);
   } else if (root_ == gained_focus) {
     web_view_->setFocus(true);
   }
 }
 
 void DocumentView::OnViewDestroyed(mojo::View* view) {
   DCHECK_EQ(view, root_);
 
-  delete this;
+  root_ = nullptr;
 }
 
 void DocumentView::OnViewInputEvent(
     mojo::View* view, const mojo::EventPtr& event) {
   scoped_ptr<blink::WebInputEvent> web_event =
       event.To<scoped_ptr<blink::WebInputEvent> >();
   if (web_event)
     web_view_->handleInputEvent(*web_event);
 }
 
@@ skipping 18 matching lines @@
 void DocumentView::StartDebuggerInspectorBackend() {
   if (!inspector_backend_) {
     inspector_host_.reset(new InspectorHostImpl(web_view_, shell_));
     inspector_backend_.reset(
         new inspector::InspectorBackendMojo(inspector_host_.get()));
   }
   inspector_backend_->Connect();
 }
 
 }  // namespace sky