The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/bd601e5a5d235c1c933190286c04db14b458971e

commit bd601e5a5d235c1c933190286c04db14b458971e
Author: kylechar <kylechar@chromium.org>
Date: Thu Mar 31 13:11:35 2016

Add mus_demo mojo app.

Simple mojo app that connects to mus, creates a new window and draws
into the window. Draws a spinning square.

Provides a simple way to test mus graphics output without the complexity
of starting mash.

BUG= 599162 

Review URL: https://codereview.chromium.org/1832943002

Cr-Commit-Position: refs/heads/master@{#384259}

[modify] https://crrev.com/bd601e5a5d235c1c933190286c04db14b458971e/BUILD.gn
[add] https://crrev.com/bd601e5a5d235c1c933190286c04db14b458971e/components/mus/demo/BUILD.gn
[add] https://crrev.com/bd601e5a5d235c1c933190286c04db14b458971e/components/mus/demo/DEPS
[add] https://crrev.com/bd601e5a5d235c1c933190286c04db14b458971e/components/mus/demo/OWNERS
[add] https://crrev.com/bd601e5a5d235c1c933190286c04db14b458971e/components/mus/demo/main.cc
[add] https://crrev.com/bd601e5a5d235c1c933190286c04db14b458971e/components/mus/demo/manifest.json
[add] https://crrev.com/bd601e5a5d235c1c933190286c04db14b458971e/components/mus/demo/mus_demo.cc
[add] https://crrev.com/bd601e5a5d235c1c933190286c04db14b458971e/components/mus/demo/mus_demo.h