Revert of Temporarily disable android_arm64_rel trybot.

Revert of Temporarily disable android_arm64_rel trybot. (patchset #1 id:1 of https://codereview.webrtc.org/2212913002/ )

Reason for revert:
The bot is now back online.

Original issue's description:
> Temporarily disable android_arm64_rel trybot.
>
> The trybot machine build140-b4 has issues with its devices:
> https://build.chromium.org/p/tryserver.webrtc/builders/android_arm64_rel
>
> BUG=634266
> NOTRY=True
>
> Committed: https://crrev.com/bfc7a30c663dbc7ecad145b8e834ebb47b3f75ec
> Cr-Commit-Position: refs/heads/master@{#13634}

TBR=ehmaldonado@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=634266
Committed: https://crrev.com/a4e4e7a523998d5b52c5899565cf1af3214315fa
Cr-Commit-Position: refs/heads/master@{#13648}

[kjellander_webrtc, 2016-08-04 19:45:21]

Created Revert of Temporarily disable android_arm64_rel trybot.

[kjellander_webrtc, 2016-08-04 19:45:28]

The CQ bit was checked by kjellander@webrtc.org

[commit-bot: I haz the power, 2016-08-04 19:45:36]

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

[commit-bot: I haz the power, 2016-08-04 19:45:42]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-08-04 19:45:50]

Description was changed from

==========
Revert of Temporarily disable android_arm64_rel trybot. (patchset #1 id:1 of
https://codereview.webrtc.org/2212913002/ )

Reason for revert:
The bot is now back online.

Original issue's description:
> Temporarily disable android_arm64_rel trybot.
> 
> The trybot machine build140-b4 has issues with its devices:
> https://build.chromium.org/p/tryserver.webrtc/builders/android_arm64_rel
> 
> BUG=634266
> NOTRY=True
> 
> Committed: https://crrev.com/bfc7a30c663dbc7ecad145b8e834ebb47b3f75ec
> Cr-Commit-Position: refs/heads/master@{#13634}

TBR=ehmaldonado@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=634266
==========

to

==========
Revert of Temporarily disable android_arm64_rel trybot. (patchset #1 id:1 of
https://codereview.webrtc.org/2212913002/ )

Reason for revert:
The bot is now back online.

Original issue's description:
> Temporarily disable android_arm64_rel trybot.
>
> The trybot machine build140-b4 has issues with its devices:
> https://build.chromium.org/p/tryserver.webrtc/builders/android_arm64_rel
>
> BUG=634266
> NOTRY=True
>
> Committed: https://crrev.com/bfc7a30c663dbc7ecad145b8e834ebb47b3f75ec
> Cr-Commit-Position: refs/heads/master@{#13634}

TBR=ehmaldonado@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=634266

Committed: https://crrev.com/a4e4e7a523998d5b52c5899565cf1af3214315fa
Cr-Commit-Position: refs/heads/master@{#13648}
==========

[commit-bot: I haz the power, 2016-08-04 19:45:51]

Patchset 1 (id:??) landed as
https://crrev.com/a4e4e7a523998d5b52c5899565cf1af3214315fa
Cr-Commit-Position: refs/heads/master@{#13648}

[kjellander_webrtc, 2016-08-24 06:14:57]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.webrtc.org/2270943003/ by kjellander@webrtc.org.

The reason for reverting is: The bot is having problems again..