- Don't encode description when calling presubmit,
  codecs.open already takes care of that.
- Don't use raw_input on Python 3
- Encode stdin when calling clang-format.

Bug: 1058318, 1058318
Change-Id: I825422e160c00b33b2c52b6e64e5f0a3e44606f7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/2086631Reviewed-by: Josip Sokcevic <sokcevic@google.com>
Commit-Queue: Edward Lesmes <ehmaldonado@chromium.org>