Revert of Proguard warning suppresions removed

Revert of Proguard warning suppresions removed (patchset #3 id:40001 of https://codereview.chromium.org/2069213002/ )

Reason for revert:
Reverting on behalf of sheriff, breaks arm64-builder-rel due to SslCertificate suppression still being needed.

Original issue's description:
> Proguard warning suppresions removed
> 
> Old warning suppressions are kept in proguard.flags file without anyone
> caring about them. It seems like removing them has absolutely no effect.
> 
> BUG=619937
> 
> Committed: https://crrev.com/717861ebc8fd72bcca825c4d5049047a75afd34c
> Cr-Commit-Position: refs/heads/master@{#400676}

TBR=agrieve@chromium.org,wnwen@chromium.org,smaier@chromium.org
NOTRY=true
BUG=619937

[aelias_OOO_until_Jul13, 2016-06-21 21:41:04]

The CQ bit was checked by aelias@chromium.org

[aelias_OOO_until_Jul13, 2016-06-21 21:41:04]

Created Revert of Proguard warning suppresions removed

[commit-bot: I haz the power, 2016-06-21 21:41:32]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/2084013004/1

[aelias_OOO_until_Jul13, 2016-06-21 21:47:27]

The CQ bit was unchecked by aelias@chromium.org

[aelias_OOO_until_Jul13, 2016-06-21 21:47:37]

Description was changed from

==========
Revert of Proguard warning suppresions removed (patchset #3 id:40001 of
https://codereview.chromium.org/2069213002/ )

Reason for revert:
Reverting on behalf of sheriff, breaks arm64-builder-rel due to SslCertificate
suppression still being needed.

Original issue's description:
> Proguard warning suppresions removed
> 
> Old warning suppressions are kept in proguard.flags file without anyone
> caring about them. It seems like removing them has absolutely no effect.
> 
> BUG=619937
> 
> Committed: https://crrev.com/717861ebc8fd72bcca825c4d5049047a75afd34c
> Cr-Commit-Position: refs/heads/master@{#400676}

TBR=agrieve@chromium.org,wnwen@chromium.org,smaier@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=619937
==========

to

==========
Revert of Proguard warning suppresions removed (patchset #3 id:40001 of
https://codereview.chromium.org/2069213002/ )

Reason for revert:
Reverting on behalf of sheriff, breaks arm64-builder-rel due to SslCertificate
suppression still being needed.

Original issue's description:
> Proguard warning suppresions removed
> 
> Old warning suppressions are kept in proguard.flags file without anyone
> caring about them. It seems like removing them has absolutely no effect.
> 
> BUG=619937
> 
> Committed: https://crrev.com/717861ebc8fd72bcca825c4d5049047a75afd34c
> Cr-Commit-Position: refs/heads/master@{#400676}

TBR=agrieve@chromium.org,wnwen@chromium.org,smaier@chromium.org
NOTRY=true
BUG=619937
==========

[aelias_OOO_until_Jul13, 2016-06-21 21:55:49]

Canceled the revert because it seems that the true culprit is downstream patch
https://chrome-internal-review.googlesource.com/#/c/265767/

[smaier, 2016-06-22 17:20:42]

This can be abandoned as
https://chrome-internal-review.googlesource.com/#/c/265916/ was reverted
instead.