Add ShouldSkip variant that can read a --match flag directly.

Just seemed like we were going through lots of hoops for this common case.

BUG=
R=scroggo@google.com

Author: mtklein@google.com

Review URL: https://chromiumcodereview.appspot.com/23708009

git-svn-id: http://skia.googlecode.com/svn/trunk@11034 2bbb7eff-a529-9590-31e7-b0007b416f81
6 files changed