Add concise option to Calmbench bot

As \r doesn't work on bot output, the new output will be much more concise.

TBR: borenet@google.com
Bug: skia:
Change-Id: I190daeae230ea6e0c4bfebc53c6c5c1fd46c503a
Reviewed-on: https://skia-review.googlesource.com/60840
Reviewed-by: Yuqian Li <liyuqian@google.com>
Commit-Queue: Yuqian Li <liyuqian@google.com>
4 files changed