Change mojo URLs from mojo://mojo_foo to mojo://foo.

mojo/examples/demo_launcher/demo_launcher.cc

Index: mojo/examples/demo_launcher/demo_launcher.cc
diff --git a/mojo/examples/demo_launcher/demo_launcher.cc b/mojo/examples/demo_launcher/demo_launcher.cc
index 2165e2e4806c5d49b41646b84506119d190d9370..820d0ad503ad3284a39f40cc2f96b742135a52df 100644
--- a/mojo/examples/demo_launcher/demo_launcher.cc
+++ b/mojo/examples/demo_launcher/demo_launcher.cc
@@ -18,7 +18,7 @@ class DemoLauncher : public mojo::ApplicationDelegate {
  private:
   virtual void Initialize(mojo::ApplicationImpl* app) override {
     context_.reset(new mojo::ViewManagerContext(app));
-    context_->Embed("mojo:mojo_window_manager");
+    context_->Embed("mojo:window_manager");
   }
 
   scoped_ptr<mojo::ViewManagerContext> context_;