Add a minimal --undefok to SkCommandLineFlags.

Similar in spirit to gflags' undefok, I'd like to be able to ignore
specific unknown flags.  This lets me run the same command line on, say,
a branch that's got a new flag and on a clean branch tracking
origin/master.  This is handy for performance comparison, etc.

It's not essential, and if you hate this I can find another way.

As an example, I want to compare the runtime of SKP recording with my new code.  I've added a flag --skr to bench_record to help this.  So I want to compare

origin/master: out/Release/bench_record
my patch:      out/Release/bench_record --skr

This lets me run both as out/Release/bench_record --undefok skr --skr, which is handy for scripts and things.

BUG=skia:
R=scroggo@google.com, mtklein@google.com

Author: mtklein@chromium.org

Review URL: https://codereview.chromium.org/209393015

git-svn-id: http://skia.googlecode.com/svn/trunk@13945 2bbb7eff-a529-9590-31e7-b0007b416f81
1 file changed