Refactor gmmain to separate out config parsing

R=vandebo@chromium.org, reed@google.com, edisonn@google.com

Author: richardlin@chromium.org

Review URL: https://chromiumcodereview.appspot.com/21715002

git-svn-id: http://skia.googlecode.com/svn/trunk@10703 2bbb7eff-a529-9590-31e7-b0007b416f81
1 file changed