GAR. Fix demo launcher typo.

BUG=none
TBR=aa@chromium.org

Review URL: https://codereview.chromium.org/600153002

Cr-Commit-Position: refs/heads/master@{#296542}

mojo/examples/demo_launcher/demo_launcher.cc

@@ -25,7 +25,7 @@ class DemoLauncher : public mojo::ApplicationDelegate {
  private:
   virtual void Initialize(mojo::ApplicationImpl* app) MOJO_OVERRIDE {
     context_.reset(new mojo::ViewManagerContext(app));
-    context_->Embed("mojo:mojo_view_manager");
+    context_->Embed("mojo:mojo_window_manager");
   }
 
   scoped_ptr<mojo::ViewManagerContext> context_;