Address review comments for r322149 (package script for instrumented libs).

I accidentally landed the wrong patchset. :(

BUG=462636
TBR=glider@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/1004683003

Cr-Original-Commit-Position: refs/heads/master@{#322150}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 3b966a9ed8b4af7fb9dd54611037ec79e66aa3ec
1 file changed