Hook up platform events in Mojo shell on Linux desktop

mojo/shell/context.cc

 // Copyright 2013 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/shell/context.h"
 
 #include "build/build_config.h"
 #include "base/command_line.h"
 #include "base/lazy_instance.h"
 #include "base/memory/scoped_vector.h"
@@ skipping 82 matching lines @@
   service_manager_.set_default_loader(
       scoped_ptr<ServiceLoader>(
           new DynamicServiceLoader(this, runner_factory.Pass())));
   // The native viewport service synchronously waits for certain messages. If we
   // don't run it on its own thread we can easily deadlock. Long term native
   // viewport should run its own process so that this isn't an issue.
   service_manager_.SetLoaderForURL(
       scoped_ptr<ServiceLoader>(
           new BackgroundServiceLoader(
               scoped_ptr<ServiceLoader>(new NativeViewportServiceLoader(this)),
-              "native_viewport")),
+              "native_viewport",
+              base::MessageLoop::TYPE_UI)),
       GURL("mojo:mojo_native_viewport_service"));
 #if defined(USE_AURA)
   // TODO(sky): need a better way to find this. It shouldn't be linked in.
   service_manager_.SetLoaderForURL(
       scoped_ptr<ServiceLoader>(new ViewManagerLoader()),
       GURL("mojo:mojo_view_manager"));
 #endif
 
 #if defined(OS_LINUX)
   service_manager_.SetLoaderForScheme(
@@ skipping 14 matching lines @@
 #if defined(USE_AURA)
   service_manager_.SetLoaderForURL(
       scoped_ptr<ServiceLoader>(),
       GURL("mojo:mojo_view_manager"));
 #endif
   service_manager_.set_default_loader(scoped_ptr<ServiceLoader>());
 }
 
 }  // namespace shell
 }  // namespace mojo