Revert of Reland [Presubmit tests] Warn when new source files are not added to GN/GYPi files.

Revert of Reland [Presubmit tests] Warn when new source files are not added to GN/GYPi files. (patchset #1 id:1 of https://codereview.chromium.org/2278093004/ )

Reason for revert:
This causes warning if files are referenced in gyp file. https://codereview.chromium.org/2285703003/ triggered presubmit when it shouln't have.

Original issue's description:
> Reland [Presubmit tests] Warn when new source files are not added to GN/GYPi files.
>
> Add a presubmit check that warns when new source files are
> not added to GN or gypi files. Check is done on upload only before gni includes are fixed.
>
> BUG=112371
>
> Committed: https://crrev.com/1efc2f5f650a355056a98b6c99d4d0260742a750
> Cr-Commit-Position: refs/heads/master@{#414975}

TBR=dpranke@chromium.org,maksim.sisov@intel.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=112371
Committed: https://crrev.com/b229a7da7cedc5950b4f038503d42f04cd8c9d88
Cr-Commit-Position: refs/heads/master@{#415166}

[sky, 2016-08-30 03:33:07]

The CQ bit was checked by sky@chromium.org

[sky, 2016-08-30 03:33:07]

Created Revert of Reland [Presubmit tests] Warn when new source files are not
added to GN/GYPi files.

[commit-bot: I haz the power, 2016-08-30 03:46:02]

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, 2016-08-30 05:37:17]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-08-30 05:40:38]

Description was changed from

==========
Revert of Reland [Presubmit tests] Warn when new source files are not added to
GN/GYPi files. (patchset #1 id:1 of https://codereview.chromium.org/2278093004/
)

Reason for revert:
This causes warning if files are referenced in gyp file.
https://codereview.chromium.org/2285703003/ triggered presubmit when it shouln't
have.

Original issue's description:
> Reland [Presubmit tests] Warn when new source files are not added to GN/GYPi
files.
> 
> Add a presubmit check that warns when new source files are
> not added to GN or gypi files. Check is done on upload only before gni
includes are fixed.
> 
> BUG=112371
> 
> Committed: https://crrev.com/1efc2f5f650a355056a98b6c99d4d0260742a750
> Cr-Commit-Position: refs/heads/master@{#414975}

TBR=dpranke@chromium.org,maksim.sisov@intel.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=112371
==========

to

==========
Revert of Reland [Presubmit tests] Warn when new source files are not added to
GN/GYPi files. (patchset #1 id:1 of https://codereview.chromium.org/2278093004/
)

Reason for revert:
This causes warning if files are referenced in gyp file.
https://codereview.chromium.org/2285703003/ triggered presubmit when it shouln't
have.

Original issue's description:
> Reland [Presubmit tests] Warn when new source files are not added to GN/GYPi
files.
>
> Add a presubmit check that warns when new source files are
> not added to GN or gypi files. Check is done on upload only before gni
includes are fixed.
>
> BUG=112371
>
> Committed: https://crrev.com/1efc2f5f650a355056a98b6c99d4d0260742a750
> Cr-Commit-Position: refs/heads/master@{#414975}

TBR=dpranke@chromium.org,maksim.sisov@intel.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=112371

Committed: https://crrev.com/b229a7da7cedc5950b4f038503d42f04cd8c9d88
Cr-Commit-Position: refs/heads/master@{#415166}
==========

[commit-bot: I haz the power, 2016-08-30 05:40:39]

Patchset 1 (id:??) landed as
https://crrev.com/b229a7da7cedc5950b4f038503d42f04cd8c9d88
Cr-Commit-Position: refs/heads/master@{#415166}