We're doing the diff twice afaict, once to print stats to the user, and
once to actually do the upload. Definitely no need to
--find-copies-harder in the print.

Previously: https://codereview.chromium.org/2488823002.

R=dpranke@chromium.org
BUG=544889

Review-Url: https://codereview.chromium.org/2489963003