Revert of Remove libpeerconnection target from third_party/libjingle

Revert of Remove libpeerconnection target from third_party/libjingle (patchset #4 id:60001 of https://codereview.chromium.org/1808233002/ )

Reason for revert:
Broke clang/win gn build (https://bugs.chromium.org/p/chromium/issues/detail?id=598316), as mentioned in the review thread in comment 24.

Original issue's description:
> Remove libpeerconnection target from third_party/libjingle
>
> All locations that depended on the target also depended on libjingle_webrtc,
> which is where the sources of libpeerconnection were moved.
>
> BUG=webrtc:4256, 481633
>
> Committed: https://crrev.com/696e62e66c1f1d2121f1451501d3066bf2f5ea4f
> Cr-Commit-Position: refs/heads/master@{#383468}

TBR=jochen@chromium.org,jam@chromium.org,sergeyu@chromium.org,tommi@chromium.org,kjellander@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:4256, 481633
Committed: https://crrev.com/8d484368f9d4013effeee0e078fbe7039254cd45
Cr-Commit-Position: refs/heads/master@{#383490}

[Nico, 2016-03-28 14:15:21]

Created Revert of Remove libpeerconnection target from third_party/libjingle

[commit-bot: I haz the power, 2016-03-28 14:15:28]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1834163002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1834163002/1

[commit-bot: I haz the power, 2016-03-28 14:16:03]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-03-28 14:17:12]

Description was changed from

==========
Revert of Remove libpeerconnection target from third_party/libjingle (patchset
#4 id:60001 of https://codereview.chromium.org/1808233002/ )

Reason for revert:
Broke clang/win gn build
(https://bugs.chromium.org/p/chromium/issues/detail?id=598316), as mentioned in
the review thread in comment 24.

Original issue's description:
> Remove libpeerconnection target from third_party/libjingle
> 
> All locations that depended on the target also depended on libjingle_webrtc,
> which is where the sources of libpeerconnection were moved.
> 
> BUG=webrtc:4256,481633
> 
> Committed: https://crrev.com/696e62e66c1f1d2121f1451501d3066bf2f5ea4f
> Cr-Commit-Position: refs/heads/master@{#383468}

TBR=jochen@chromium.org,jam@chromium.org,sergeyu@chromium.org,tommi@chromium....
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:4256,481633
==========

to

==========
Revert of Remove libpeerconnection target from third_party/libjingle (patchset
#4 id:60001 of https://codereview.chromium.org/1808233002/ )

Reason for revert:
Broke clang/win gn build
(https://bugs.chromium.org/p/chromium/issues/detail?id=598316), as mentioned in
the review thread in comment 24.

Original issue's description:
> Remove libpeerconnection target from third_party/libjingle
>
> All locations that depended on the target also depended on libjingle_webrtc,
> which is where the sources of libpeerconnection were moved.
>
> BUG=webrtc:4256,481633
>
> Committed: https://crrev.com/696e62e66c1f1d2121f1451501d3066bf2f5ea4f
> Cr-Commit-Position: refs/heads/master@{#383468}

TBR=jochen@chromium.org,jam@chromium.org,sergeyu@chromium.org,tommi@chromium....
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:4256,481633

Committed: https://crrev.com/8d484368f9d4013effeee0e078fbe7039254cd45
Cr-Commit-Position: refs/heads/master@{#383490}
==========

[commit-bot: I haz the power, 2016-03-28 14:17:13]

Patchset 1 (id:??) landed as
https://crrev.com/8d484368f9d4013effeee0e078fbe7039254cd45
Cr-Commit-Position: refs/heads/master@{#383490}

[kjellander_chromium, 2016-03-29 19:16:20]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.chromium.org/1839063005/ by kjellander@chromium.org.

The reason for reverting is: The config.h problem was addressed in
https://codereview.webrtc.org/1820023004/ which was rolled in with
https://codereview.chromium.org/1840133002/
.