render_pictures and bench_pictures now use a --mode parameter.

This replaces the --tile, --pipe, etc. options from before as they are mutually exclusive.

Review URL: https://codereview.appspot.com/6443076

git-svn-id: http://skia.googlecode.com/svn/trunk@4930 2bbb7eff-a529-9590-31e7-b0007b416f81
2 files changed