Revert of Add presubmit rule banning relative header includes

Revert of Add presubmit rule banning relative header includes (patchset #1 id:1 of https://codereview.chromium.org/2900173003/ )

Reason for revert:
Fails when it should not.

Original issue's description:
> Add presubmit rule banning relative header includes
> 
> Relative header includes (#include path containing "../") can be used to cheat
> the dependency system because they're not checked properly. This CL adds a
> presubmit rule to catch these.
> 
> This rules applies to third_party/WebKit, but not anywhere else in third_party/.
> There's one currently existing file I know of that would fail this rule:
> ppapi/lib/gl/include/GLES2/gl2.h
> 
> I did not change this file when cleaning up the other headers since it appears
> to be code imported from a third-party repo. I guess whoever updates this file
> will have to bypass the rule.
> 
> BUG=724264
> 
> Review-Url: https://codereview.chromium.org/2900173003
> Cr-Commit-Position: refs/heads/master@{#474396}
> Committed: https://chromium.googlesource.com/chromium/src/+/90089e1929d8ec7bda755456e7a54808a2c843ea

TBR=jochen@chromium.org,rlanday@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=724264
Review-Url: https://codereview.chromium.org/2897383002
Cr-Commit-Position: refs/heads/master@{#474400}
Committed: https://chromium.googlesource.com/chromium/src/+/c5cf3f2778b406509d532111bb7005f25d3dfcee

[danakj, 2017-05-24 20:13:11]

The CQ bit was checked by danakj@chromium.org

[danakj, 2017-05-24 20:13:12]

Created Revert of Add presubmit rule banning relative header includes

[commit-bot: I haz the power, 2017-05-24 20:13:52]

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, 2017-05-24 20:14:20]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1495656791678840, "parent_rev":
"e91e520f7b2f426b860955d9be2694a28b353866", "commit_rev":
"c5cf3f2778b406509d532111bb7005f25d3dfcee"}

[commit-bot: I haz the power, 2017-05-24 20:14:31]

Description was changed from

==========
Revert of Add presubmit rule banning relative header includes (patchset #1 id:1
of https://codereview.chromium.org/2900173003/ )

Reason for revert:
Fails when it should not.

Original issue's description:
> Add presubmit rule banning relative header includes
> 
> Relative header includes (#include path containing "../") can be used to cheat
> the dependency system because they're not checked properly. This CL adds a
> presubmit rule to catch these.
> 
> This rules applies to third_party/WebKit, but not anywhere else in
third_party/.
> There's one currently existing file I know of that would fail this rule:
> ppapi/lib/gl/include/GLES2/gl2.h
> 
> I did not change this file when cleaning up the other headers since it appears
> to be code imported from a third-party repo. I guess whoever updates this file
> will have to bypass the rule.
> 
> BUG=724264
> 
> Review-Url: https://codereview.chromium.org/2900173003
> Cr-Commit-Position: refs/heads/master@{#474396}
> Committed:
https://chromium.googlesource.com/chromium/src/+/90089e1929d8ec7bda755456e7a5...

TBR=jochen@chromium.org,rlanday@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=724264
==========

to

==========
Revert of Add presubmit rule banning relative header includes (patchset #1 id:1
of https://codereview.chromium.org/2900173003/ )

Reason for revert:
Fails when it should not.

Original issue's description:
> Add presubmit rule banning relative header includes
> 
> Relative header includes (#include path containing "../") can be used to cheat
> the dependency system because they're not checked properly. This CL adds a
> presubmit rule to catch these.
> 
> This rules applies to third_party/WebKit, but not anywhere else in
third_party/.
> There's one currently existing file I know of that would fail this rule:
> ppapi/lib/gl/include/GLES2/gl2.h
> 
> I did not change this file when cleaning up the other headers since it appears
> to be code imported from a third-party repo. I guess whoever updates this file
> will have to bypass the rule.
> 
> BUG=724264
> 
> Review-Url: https://codereview.chromium.org/2900173003
> Cr-Commit-Position: refs/heads/master@{#474396}
> Committed:
https://chromium.googlesource.com/chromium/src/+/90089e1929d8ec7bda755456e7a5...

TBR=jochen@chromium.org,rlanday@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=724264

Review-Url: https://codereview.chromium.org/2897383002
Cr-Commit-Position: refs/heads/master@{#474400}
Committed:
https://chromium.googlesource.com/chromium/src/+/c5cf3f2778b406509d532111bb70...
==========

[commit-bot: I haz the power, 2017-05-24 20:14:32]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/c5cf3f2778b406509d532111bb70...