Use system command to unzip binaries from zip file on Mac OS

Use system command to unzip binaries from zip file on Mac OS
BUG=700097
Review-Url: https://codereview.chromium.org/2757333002
Cr-Commit-Position: refs/heads/master@{#458149}
Committed: https://chromium.googlesource.com/chromium/src/+/2375e6dc4842a87abb21b9f1908fdcd3966ae54c

[prasadv, 2017-03-20 17:47:00]

prasadv@chromium.org changed reviewers:
+ mmoss@google.com, prasadv@chromium.org

[Michael Moss, 2017-03-20 17:49:06]

mmoss@chromium.org changed reviewers:
+ mmoss@chromium.org

[Michael Moss, 2017-03-20 17:49:06]

lgtm

[prasadv, 2017-03-20 17:49:31]

The CQ bit was checked by prasadv@chromium.org

[commit-bot: I haz the power, 2017-03-20 17:50:03]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-03-20 18:00:16]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2017-03-20 18:00:18]

Try jobs failed on following builders:
  chromium_presubmit on master.tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/chromium_presub...)

[RobertoCN, 2017-03-20 19:06:43]

robertocn@chromium.org changed reviewers:
+ robertocn@chromium.org

[RobertoCN, 2017-03-20 19:06:43]

lgtm

[prasadv, 2017-03-20 19:07:08]

The CQ bit was checked by prasadv@chromium.org

[commit-bot: I haz the power, 2017-03-20 19:07:51]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-03-20 19:23:26]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1490036828759920, "parent_rev":
"4186e5de72bf265b4e6f44e933b13132cf250068", "commit_rev":
"2375e6dc4842a87abb21b9f1908fdcd3966ae54c"}

[commit-bot: I haz the power, 2017-03-20 19:24:09]

Description was changed from

==========
Use system command to unzip binaries from zip file on Mac OS
BUG=700097
==========

to

==========
Use system command to unzip binaries from zip file on Mac OS
BUG=700097

Review-Url: https://codereview.chromium.org/2757333002
Cr-Commit-Position: refs/heads/master@{#458149}
Committed:
https://chromium.googlesource.com/chromium/src/+/2375e6dc4842a87abb21b9f1908f...
==========

[commit-bot: I haz the power, 2017-03-20 19:24:10]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/2375e6dc4842a87abb21b9f1908f...