Revert of Remove obsolete PauseableHttpProtocolHandler class.

Revert of Remove obsolete PauseableHttpProtocolHandler class. (patchset #1 id:1 of https://codereview.chromium.org/2627973005/ )

Reason for revert:
Breaks CroNet

Original issue's description:
> Remove obsolete PauseableHttpProtocolHandler class.
> 
> This class is never referenced apart from declaration/definition
> and thus can be removed from the codebase.
> 
> BUG=585700
> 
> Review-Url: https://codereview.chromium.org/2627973005
> Cr-Commit-Position: refs/heads/master@{#443578}
> Committed: https://chromium.googlesource.com/chromium/src/+/5688a4a82f90d9c27ab3e39d0dd682ca31f5876a

TBR=sdefresne@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=585700
Review-Url: https://codereview.chromium.org/2632643003
Cr-Commit-Position: refs/heads/master@{#443629}
Committed: https://chromium.googlesource.com/chromium/src/+/9d4f71cb85e6a4975e40384916b5165022528e13

[Eugene But (OOO till 7-30), 2017-01-13 18:54:41]

The CQ bit was checked by eugenebut@chromium.org

[Eugene But (OOO till 7-30), 2017-01-13 18:54:41]

Created Revert of Remove obsolete PauseableHttpProtocolHandler class.

[commit-bot: I haz the power, 2017-01-13 18:55:07]

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, 2017-01-13 18:56:26]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1484333681239420, "parent_rev":
"646a2f792c2d73c63d1df79cb698299e1697c447", "commit_rev":
"9d4f71cb85e6a4975e40384916b5165022528e13"}

[commit-bot: I haz the power, 2017-01-13 18:56:59]

Description was changed from

==========
Revert of Remove obsolete PauseableHttpProtocolHandler class. (patchset #1 id:1
of https://codereview.chromium.org/2627973005/ )

Reason for revert:
Breaks CroNet

Original issue's description:
> Remove obsolete PauseableHttpProtocolHandler class.
> 
> This class is never referenced apart from declaration/definition
> and thus can be removed from the codebase.
> 
> BUG=585700
> 
> Review-Url: https://codereview.chromium.org/2627973005
> Cr-Commit-Position: refs/heads/master@{#443578}
> Committed:
https://chromium.googlesource.com/chromium/src/+/5688a4a82f90d9c27ab3e39d0dd6...

TBR=sdefresne@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=585700
==========

to

==========
Revert of Remove obsolete PauseableHttpProtocolHandler class. (patchset #1 id:1
of https://codereview.chromium.org/2627973005/ )

Reason for revert:
Breaks CroNet

Original issue's description:
> Remove obsolete PauseableHttpProtocolHandler class.
> 
> This class is never referenced apart from declaration/definition
> and thus can be removed from the codebase.
> 
> BUG=585700
> 
> Review-Url: https://codereview.chromium.org/2627973005
> Cr-Commit-Position: refs/heads/master@{#443578}
> Committed:
https://chromium.googlesource.com/chromium/src/+/5688a4a82f90d9c27ab3e39d0dd6...

TBR=sdefresne@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=585700

Review-Url: https://codereview.chromium.org/2632643003
Cr-Commit-Position: refs/heads/master@{#443629}
Committed:
https://chromium.googlesource.com/chromium/src/+/9d4f71cb85e6a4975e40384916b5...
==========

[commit-bot: I haz the power, 2017-01-13 18:57:00]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/9d4f71cb85e6a4975e40384916b5...