Disable app shutdown logic for now while I fix the network_service apptests.

mojo/application/app_lifetime_helper.cc

 // 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.
 
 #include "mojo/application/app_lifetime_helper.h"
 
 #include "base/bind.h"
 #include "base/message_loop/message_loop.h"
 #include "mojo/application/public/cpp/application_impl.h"
 
@@ skipping 63 matching lines @@
   AddRef();
   return make_scoped_ptr(new AppRefCount(
       this, base::MessageLoop::current()->task_runner()));
 }
 
 void AppLifetimeHelper::AddRef() {
   ref_count_++;
 }
 
 void AppLifetimeHelper::Release() {
-  if (!--ref_count_)
-    ApplicationImpl::Terminate();
+  if (!--ref_count_) {
+    // Disabled until network_service tests pass again http://crbug.com/484234
+    //ApplicationImpl::Terminate();
+  }
 }
 
 }  // namespace mojo