[crosperf] Update bisecing triage tool to not update build_image.
The package bisecting tool used to actually edit the build_image
script, to prevent it from calling 'eclean', which messed up the
bisecting tool. Now there's a flag '-noeclean' that can be passed
to build_image instead. This CL updates the tool to use the flag,
which is much safer, rather than modifying the build_image script.
It also cleans up a few other minor issues with the tool
BUG=chromium:614829
TEST=Ran the tool with these changes.
Change-Id: If92148306c041b49d3fa45253ea5451bc840d862
Reviewed-on: https://chrome-internal-review.googlesource.com/260726
Commit-Ready: Caroline Tice <cmtice@google.com>
Tested-by: Caroline Tice <cmtice@google.com>
Reviewed-by: Yunlian Jiang <yunlian@google.com>
5 files changed