Add PROJECT: mojo to codereview.settings.
Add PROJECT: mojo to codereview.settings.

This will make it possible to do project-based queries
in codereview.chromium.org for things like a commit-queue.

R=jamesr@chromium.org

Review URL: https://codereview.chromium.org/644833004

chinmaygarde/mojo,chinmaygarde/mojo,afandria/mojo,chinmaygarde/mojo,jianglu/mojo,afandria/mojo,jianglu/mojo,collinjackson/mojo,collinjackson/mojo,afandria/mojo,afandria/mojo,afandria/mojo,jianglu/mojo,collinjackson/mojo,collinjackson/mojo,chinmaygarde/mojo,chinmaygarde/mojo,jianglu/mojo,collinjackson/mojo,jianglu/mojo,chinmaygarde/mojo,jianglu/mojo,afandria/mojo,afandria/mojo,collinjackson/mojo,collinjackson/mojo,afandria/mojo,collinjackson/mojo,jianglu/mojo,collinjackson/mojo,chinmaygarde/mojo,chinmaygarde/mojo,jianglu/mojo,chinmaygarde/mojo