Revert of Remove support for Alt-Svc/Alternate Protocol Probability

Revert of Remove support for Alt-Svc/Alternate Protocol Probability (patchset #7 id:120001 of https://codereview.chromium.org/1699653002/ )

Reason for revert:
This appears to have broken the following bot: https://build.chromium.org/p/chromium.mac/builders/iOS_Device_%28ninja%29/builds/43364

Original issue's description:
> Remove support forAlt-Svc/Alternate Protocol Probability
>
> Committed: https://crrev.com/dced4c771d25317d26a0f6e258c7b7f64d4e8eea
> Cr-Commit-Position: refs/heads/master@{#379652}

TBR=bnc@chromium.org,eroman@chromium.org,mef@chromium.org,rch@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Committed: https://crrev.com/5b168c11bb7e574c6386f1857d58e5e4cad5e25a
Cr-Commit-Position: refs/heads/master@{#379658}

[anthonyvd, 2016-03-07 22:02:45]

Created Revert of Remove support for Alt-Svc/Alternate Protocol Probability

[commit-bot: I haz the power, 2016-03-07 22:03:10]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1773853003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1773853003/1

[commit-bot: I haz the power, 2016-03-07 22:04:09]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-03-07 22:05:47]

Description was changed from

==========
Revert of Remove support for Alt-Svc/Alternate Protocol Probability (patchset #7
id:120001 of https://codereview.chromium.org/1699653002/ )

Reason for revert:
This appears to have broken the following bot:
https://build.chromium.org/p/chromium.mac/builders/iOS_Device_%28ninja%29/bui...

Original issue's description:
> Remove support forAlt-Svc/Alternate Protocol Probability
> 
> Committed: https://crrev.com/dced4c771d25317d26a0f6e258c7b7f64d4e8eea
> Cr-Commit-Position: refs/heads/master@{#379652}

TBR=bnc@chromium.org,eroman@chromium.org,mef@chromium.org,rch@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
==========

to

==========
Revert of Remove support for Alt-Svc/Alternate Protocol Probability (patchset #7
id:120001 of https://codereview.chromium.org/1699653002/ )

Reason for revert:
This appears to have broken the following bot:
https://build.chromium.org/p/chromium.mac/builders/iOS_Device_%28ninja%29/bui...

Original issue's description:
> Remove support forAlt-Svc/Alternate Protocol Probability
>
> Committed: https://crrev.com/dced4c771d25317d26a0f6e258c7b7f64d4e8eea
> Cr-Commit-Position: refs/heads/master@{#379652}

TBR=bnc@chromium.org,eroman@chromium.org,mef@chromium.org,rch@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Committed: https://crrev.com/5b168c11bb7e574c6386f1857d58e5e4cad5e25a
Cr-Commit-Position: refs/heads/master@{#379658}
==========

[commit-bot: I haz the power, 2016-03-07 22:05:48]

Patchset 1 (id:??) landed as
https://crrev.com/5b168c11bb7e574c6386f1857d58e5e4cad5e25a
Cr-Commit-Position: refs/heads/master@{#379658}