Fix the Unthrottled download count for parallel download

Fix the Unthrottled download count for parallel download

Only the main request should report a count, not the parallel requests.

BUG=717679
Review-Url: https://codereview.chromium.org/2854973003
Cr-Commit-Position: refs/heads/master@{#469147}
Committed: https://chromium.googlesource.com/chromium/src/+/462abbbe5b9206198afacbb76f5286da80de1106

[qinmin, 2017-05-02 19:35:09]

qinmin@chromium.org changed reviewers:
+ dtrainor@chromium.org, xingliu@chromium.org

[qinmin, 2017-05-02 19:35:10]

PTAL

[David Trainor- moved to gerrit, 2017-05-03 20:45:30]

lgtm

[qinmin, 2017-05-03 20:51:52]

The CQ bit was checked by qinmin@chromium.org

[commit-bot: I haz the power, 2017-05-03 20:52:20]

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, 2017-05-03 21:55:45]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1493844712919640, "parent_rev":
"0a6b35a42726efcd91a969b1246a39b963812853", "commit_rev":
"462abbbe5b9206198afacbb76f5286da80de1106"}

[commit-bot: I haz the power, 2017-05-03 21:55:59]

Description was changed from

==========
Fix the Unthrottled download count for parallel download

Only the main request should report a count, not the parallel requests.

BUG=717679
==========

to

==========
Fix the Unthrottled download count for parallel download

Only the main request should report a count, not the parallel requests.

BUG=717679

Review-Url: https://codereview.chromium.org/2854973003
Cr-Commit-Position: refs/heads/master@{#469147}
Committed:
https://chromium.googlesource.com/chromium/src/+/462abbbe5b9206198afacbb76f52...
==========

[commit-bot: I haz the power, 2017-05-03 21:56:00]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/462abbbe5b9206198afacbb76f52...