ApplicationImpl cleanup, part 1:

mojo/application/public/cpp/lib/application_runner.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/public/cpp/application_runner.h"
 
 #include "base/at_exit.h"
 #include "base/command_line.h"
 #include "base/debug/stack_trace.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 42 matching lines @@
 
   {
     scoped_ptr<base::MessageLoop> loop;
     if (message_loop_type_ == base::MessageLoop::TYPE_CUSTOM)
       loop.reset(new base::MessageLoop(common::MessagePumpMojo::Create()));
     else
       loop.reset(new base::MessageLoop(message_loop_type_));
 
     ApplicationImpl impl(delegate_.get(),
                          MakeRequest<Application>(MakeScopedHandle(
-                             MessagePipeHandle(application_request_handle))));
+                             MessagePipeHandle(application_request_handle))),
+                         base::MessageLoop::QuitWhenIdleClosure());
     loop->Run();
     // It's very common for the delegate to cache the app and terminate on
     // errors. If we don't delete the delegate before the app we run the risk
     // of the delegate having a stale reference to the app and trying to use it.
     // Note that we destruct the message loop first because that might trigger
     // connection error handlers and they might access objects created by the
     // delegate.
     loop.reset();
     delegate_.reset();
   }
 
   // By default the worker pool continues running until all tasks are done or
   // the process is shut down. However, because the application could be
   // unloaded before process shutdown, we have to wait for the worker pool to
   // shut down cleanly.
   base::WorkerPool::ShutDownCleanly();
 
   return MOJO_RESULT_OK;
 }
 
 MojoResult ApplicationRunner::Run(MojoHandle application_request_handle) {
   return Run(application_request_handle, true);
 }
 
 }  // namespace mojo