Update directions and lib paths for ninja.

BUG=skia:
R=robertphillips@google.com

Author: jcgregorio@google.com

Review URL: https://codereview.chromium.org/161163003

git-svn-id: http://skia.googlecode.com/svn/trunk@13429 2bbb7eff-a529-9590-31e7-b0007b416f81
2 files changed