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

mojo/examples/sample_app/sample_app.cc

Index: mojo/examples/sample_app/sample_app.cc
diff --git a/mojo/examples/sample_app/sample_app.cc b/mojo/examples/sample_app/sample_app.cc
index 96cdac9f68e7d9b41277b6aedd6a4da8c461c8a0..faa3c44ae7f29aab6f2c2a54bb977e03c7ae4662 100644
--- a/mojo/examples/sample_app/sample_app.cc
+++ b/mojo/examples/sample_app/sample_app.cc
@@ -32,11 +32,11 @@ class SampleApp : public mojo::ApplicationDelegate,
   }
 
   virtual void Initialize(mojo::ApplicationImpl* app) override {
-    app->ConnectToService("mojo:mojo_native_viewport_service", &viewport_);
+    app->ConnectToService("mojo:native_viewport_service", &viewport_);
     viewport_.set_client(this);
 
-    // TODO(jamesr): Should be mojo:mojo_gpu_service
-    app->ConnectToService("mojo:mojo_native_viewport_service", &gpu_service_);
+    // TODO(jamesr): Should be mojo:gpu_service
+    app->ConnectToService("mojo:native_viewport_service", &gpu_service_);
 
     mojo::SizePtr size(mojo::Size::New());
     size->width = 800;