PRESUBMIT: Enable header guard checks for cpplint.

PRESUBMIT: Enable header guard checks for cpplint.

This check has always been disabled since the start in
https://webrtc-codereview.appspot.com/317011 since it didn't support
our style guide back then (wanted our source code to be prefixed
with SRC_ in the header guards). I belive this was later fixed in
https://chromiumcodereview.appspot.com/15864011. At least it can now
be enabled.

BUG=5149
NOTRY=True

Committed: https://crrev.com/8cc126f91bc0dcb3506100d780146850de23b714
Cr-Commit-Position: refs/heads/master@{#10482}

[kjellander_webrtc, 2015-11-02 08:49:43]

kjellander@webrtc.org changed reviewers:
+ phoglund@webrtc.org

[phoglund, 2015-11-02 12:56:19]

lgtm

[kjellander_webrtc, 2015-11-02 13:16:30]

Description was changed from

==========
PRESUBMIT: Enable header guard checks for cpplint.

This check has always been disabled since the start in
https://webrtc-codereview.appspot.com/317011 since it didn't support
our style guide back then (wanted our source code to be prefixed
with SRC_ in the header guards). I belive this was later fixed in
https://chromiumcodereview.appspot.com/15864011. At least it can now
be enabled.

BUG=5149
==========

to

==========
PRESUBMIT: Enable header guard checks for cpplint.

This check has always been disabled since the start in
https://webrtc-codereview.appspot.com/317011 since it didn't support
our style guide back then (wanted our source code to be prefixed
with SRC_ in the header guards). I belive this was later fixed in
https://chromiumcodereview.appspot.com/15864011. At least it can now
be enabled.

BUG=5149
NOTRY=True
==========

[kjellander_webrtc, 2015-11-02 13:16:36]

The CQ bit was checked by kjellander@webrtc.org

[commit-bot: I haz the power, 2015-11-02 13:16:45]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1419203005/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1419203005/1

[commit-bot: I haz the power, 2015-11-02 13:20:44]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-11-02 13:20:54]

Patchset 1 (id:??) landed as
https://crrev.com/8cc126f91bc0dcb3506100d780146850de23b714
Cr-Commit-Position: refs/heads/master@{#10482}