libprotobuf-mutator: Add new ebuild.

libprotobuf-mutator implements custom mutators for protocol buffers
to enable fuzzing libraries to obtain higher coverage faster.

BUG=chromium:853017
TEST=emerge-{BOARD} libprotobuf-mutator

Change-Id: I1521324ac263ffc19d375c4d65a567c75e16d283
Signed-off-by: Allen Webb <allenwebb@google.com>
Reviewed-on: https://chromium-review.googlesource.com/1178463
Reviewed-by: Manoj Gupta <manojgupta@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
2 files changed