Add logging to profile downloader to diagnose Android FR issue.

Add logging to profile downloader to diagnose Android FR issue.

This is a very temporary fix that will be reverted in a few days when the additional information has been used to pinpoint the bug.

BUG=500854, 530453
Committed: https://crrev.com/55e6026b5e2016626cf3abf126e55e421e0aa2b2
Cr-Commit-Position: refs/heads/master@{#347932}

[anthonyvd, 2015-09-08 16:17:51]

Hi Roger can you please take a look at this CL that adds logging to pinpoint the
Android FR issue we've been looking into?

Thanks!

[anthonyvd, 2015-09-09 13:43:52]

anthonyvd@chromium.org changed reviewers:
+ rogerta@chromium.org

[Roger Tawa OOO till Jul 10th, 2015-09-09 14:13:59]

lgtm

[anthonyvd, 2015-09-09 14:41:08]

The CQ bit was checked by anthonyvd@chromium.org

[commit-bot: I haz the power, 2015-09-09 14:41:25]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1326273003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1326273003/1

[commit-bot: I haz the power, 2015-09-09 15:12:30]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-09-09 15:13:03]

Patchset 1 (id:??) landed as
https://crrev.com/55e6026b5e2016626cf3abf126e55e421e0aa2b2
Cr-Commit-Position: refs/heads/master@{#347932}

[Thiemo Nagel, 2015-09-14 09:02:23]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.chromium.org/1339783003/ by tnagel@chromium.org.

The reason for reverting is: Reverting because of reproducible crash, cf.
https://crbug.com/530453..