GYP Changes and Scripts for Compiling Skia for ChromeOS

For now, this requires having a complete ChromeOS checkout.

R=djsollen@google.com

Review URL: https://codereview.chromium.org/16099011

git-svn-id: http://skia.googlecode.com/svn/trunk@9505 2bbb7eff-a529-9590-31e7-b0007b416f81
22 files changed