Stop content handled application if delegate returns a null application

mojo/application/content_handler_factory.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 "mojo/application/content_handler_factory.h"
 
 #include <set>
 
 #include "base/bind.h"
 #include "base/callback.h"
@@ skipping 97 matching lines @@
 }
 
 ContentHandlerFactory::~ContentHandlerFactory() {
 }
 
 void ContentHandlerFactory::ManagedDelegate::RunApplication(
     ShellPtr shell,
     URLResponsePtr response) {
   base::MessageLoop loop(common::MessagePumpMojo::Create());
   auto application = this->CreateApplication(shell.Pass(), response.Pass());
-  loop.Run();
+  if (application)
+    loop.Run();
 }
 
 void ContentHandlerFactory::Create(ApplicationConnection* connection,
                                    InterfaceRequest<ContentHandler> request) {
   BindToRequest(new ContentHandlerImpl(delegate_), &request);
 }
 
 }  // namespace mojo