Reland of Adding PRESUBMIT check on google::protobuf

Reland of Adding PRESUBMIT check on google::protobuf (patchset #1 id:1 of https://codereview.webrtc.org/2791583002/ )

Reason for revert:
This should be landed after https://codereview.webrtc.org/2791963003.

Original issue's description:
> Revert of Adding PRESUBMIT check on google::protobuf (patchset #2 id:20001 of https://codereview.webrtc.org/2753823003/ )
> 
> Reason for revert:
> We have to revert https://codereview.webrtc.org/2747863003 and this CL depends on it.
> 
> Original issue's description:
> > Adding PRESUBMIT check on google::protobuf
> > 
> > The goal is to avoid direct usage of google::protobuf.
> > 
> > It should only be used with a 'using' directive in the header file:
> > //webrtc/base/protobuf_utils.h.
> > 
> > BUG=webrtc:7340
> > NOTRY=True
> > 
> > Review-Url: https://codereview.webrtc.org/2753823003
> > Cr-Commit-Position: refs/heads/master@{#17467}
> > Committed: https://chromium.googlesource.com/external/webrtc/+/dd27055cb78aa839659ed9e9f0656a265c285ae7
> 
> TBR=kjellander@webrtc.org
> # Not skipping CQ checks because original CL landed more than 1 days ago.
> BUG=webrtc:7340
> 
> Review-Url: https://codereview.webrtc.org/2791583002
> Cr-Commit-Position: refs/heads/master@{#17481}
> Committed: https://chromium.googlesource.com/external/webrtc/+/515dff40b711c70780612f2a4850e151a28bacde

TBR=kjellander@webrtc.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=webrtc:7340
Review-Url: https://codereview.webrtc.org/2792103002
Cr-Commit-Position: refs/heads/master@{#17588}
Committed: https://chromium.googlesource.com/external/webrtc/+/38415b2d8e7a4a5a3c4ac52e24c6ecc31c2da007

[mbonadei, 2017-04-03 18:31:34]

Created Reland of Adding PRESUBMIT check on google::protobuf

[kjellander_webrtc, 2017-04-04 05:41:11]

lgtm

[mbonadei, 2017-04-07 12:16:25]

The CQ bit was checked by mbonadei@webrtc.org

[commit-bot: I haz the power, 2017-04-07 12:16:35]

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, 2017-04-07 12:38:01]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1491567385139930, "parent_rev":
"423f106e8c86cd17aaf69d780e96b98b3543bc0a", "commit_rev":
"38415b2d8e7a4a5a3c4ac52e24c6ecc31c2da007"}

[commit-bot: I haz the power, 2017-04-07 12:38:09]

Description was changed from

==========
Reland of Adding PRESUBMIT check on google::protobuf (patchset #1 id:1 of
https://codereview.webrtc.org/2791583002/ )

Reason for revert:
This should be landed after https://codereview.webrtc.org/2791963003.

Original issue's description:
> Revert of Adding PRESUBMIT check on google::protobuf (patchset #2 id:20001 of
https://codereview.webrtc.org/2753823003/ )
> 
> Reason for revert:
> We have to revert https://codereview.webrtc.org/2747863003 and this CL depends
on it.
> 
> Original issue's description:
> > Adding PRESUBMIT check on google::protobuf
> > 
> > The goal is to avoid direct usage of google::protobuf.
> > 
> > It should only be used with a 'using' directive in the header file:
> > //webrtc/base/protobuf_utils.h.
> > 
> > BUG=webrtc:7340
> > NOTRY=True
> > 
> > Review-Url: https://codereview.webrtc.org/2753823003
> > Cr-Commit-Position: refs/heads/master@{#17467}
> > Committed:
https://chromium.googlesource.com/external/webrtc/+/dd27055cb78aa839659ed9e9f...
> 
> TBR=kjellander@webrtc.org
> # Not skipping CQ checks because original CL landed more than 1 days ago.
> BUG=webrtc:7340
> 
> Review-Url: https://codereview.webrtc.org/2791583002
> Cr-Commit-Position: refs/heads/master@{#17481}
> Committed:
https://chromium.googlesource.com/external/webrtc/+/515dff40b711c70780612f2a4...

TBR=kjellander@webrtc.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=webrtc:7340
==========

to

==========
Reland of Adding PRESUBMIT check on google::protobuf (patchset #1 id:1 of
https://codereview.webrtc.org/2791583002/ )

Reason for revert:
This should be landed after https://codereview.webrtc.org/2791963003.

Original issue's description:
> Revert of Adding PRESUBMIT check on google::protobuf (patchset #2 id:20001 of
https://codereview.webrtc.org/2753823003/ )
> 
> Reason for revert:
> We have to revert https://codereview.webrtc.org/2747863003 and this CL depends
on it.
> 
> Original issue's description:
> > Adding PRESUBMIT check on google::protobuf
> > 
> > The goal is to avoid direct usage of google::protobuf.
> > 
> > It should only be used with a 'using' directive in the header file:
> > //webrtc/base/protobuf_utils.h.
> > 
> > BUG=webrtc:7340
> > NOTRY=True
> > 
> > Review-Url: https://codereview.webrtc.org/2753823003
> > Cr-Commit-Position: refs/heads/master@{#17467}
> > Committed:
https://chromium.googlesource.com/external/webrtc/+/dd27055cb78aa839659ed9e9f...
> 
> TBR=kjellander@webrtc.org
> # Not skipping CQ checks because original CL landed more than 1 days ago.
> BUG=webrtc:7340
> 
> Review-Url: https://codereview.webrtc.org/2791583002
> Cr-Commit-Position: refs/heads/master@{#17481}
> Committed:
https://chromium.googlesource.com/external/webrtc/+/515dff40b711c70780612f2a4...

TBR=kjellander@webrtc.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=webrtc:7340

Review-Url: https://codereview.webrtc.org/2792103002
Cr-Commit-Position: refs/heads/master@{#17588}
Committed:
https://chromium.googlesource.com/external/webrtc/+/38415b2d8e7a4a5a3c4ac52e2...
==========

[commit-bot: I haz the power, 2017-04-07 12:38:10]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/external/webrtc/+/38415b2d8e7a4a5a3c4ac52e2...