This gets mojo_launcher.so a little further along toward running.

mojo/services/native_viewport/native_viewport_x11.cc

Index: mojo/services/native_viewport/native_viewport_x11.cc
diff --git a/mojo/services/native_viewport/native_viewport_x11.cc b/mojo/services/native_viewport/native_viewport_x11.cc
index be7d1cd79442637531c07ce0942a4aeb18db4df5..f34fc48efa6f4bb99b34cb7a4353068bb17a9af4 100644
--- a/mojo/services/native_viewport/native_viewport_x11.cc
+++ b/mojo/services/native_viewport/native_viewport_x11.cc
@@ -53,8 +53,10 @@ class NativeViewportX11 : public NativeViewport,
     atom_wm_delete_window_ = XInternAtom(display, "WM_DELETE_WINDOW", 1);
     XSetWMProtocols(display, window_, &atom_wm_delete_window_, 1);
 
-    // Assumes there is only one instance per process.
-    event_source_ = ui::PlatformEventSource::CreateDefault();
+    event_source_.reset(ui::PlatformEventSource::GetInstance());
+    if (!event_source_.get()) {

[Ben Goodger (Google), 2014/05/02 22:58:02]

nit: no braces

[Aaron Boodman, 2014/05/05 18:18:31]

Done.

+      ui::PlatformEventSource::CreateDefault();

[Ben Goodger (Google), 2014/05/02 22:58:02]

don't you need to assign to event_source_ here?

[Aaron Boodman, 2014/05/05 18:18:31]

whoopsie.

+    }
     ui::PlatformEventSource::GetInstance()->AddPlatformEventDispatcher(this);
 
     delegate_->OnAcceleratedWidgetAvailable(window_);