Revert "Update third_party/checkstyle to 7.6.1"

Revert "Update third_party/checkstyle to 7.6.1"

This reverts commit dbce02f63421f7d446d6ef317b456f6ae911f63b.

Reason for revert:
Breaking cq presubmit step

Original issue's description:
> Update third_party/checkstyle to 7.6.1
>
> This CL updates third_party/checkstyle to 7.6.1 so checkstyle would
> work with Java 8 lambda features.
>
> BUG=703238
>
> Review-Url: https://codereview.chromium.org/2799303003
> Cr-Commit-Position: refs/heads/master@{#462968}
> Committed: https://chromium.googlesource.com/chromium/src/+/dbce02f63421f7d446d6ef317b456f6ae911f63b

TBR=agrieve@chromium.org,nyquist@chromium.org,jbudorick@chromium.org,klobag@chromium.org,jbudorick@google.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=703238
Review-Url: https://codereview.chromium.org/2807753003 .
Cr-Commit-Position: refs/heads/master@{#463021}
Committed: https://chromium.googlesource.com/chromium/src/+/6fb89ced75c50e77bc5c6a29bb820534d16d5279

[Alexei Svitkine (slow), 2017-04-07 22:26:35]

Description was changed from

==========
Revert "Update third_party/checkstyle to 7.6.1"

This reverts commit dbce02f63421f7d446d6ef317b456f6ae911f63b.

Reason for revert:
Breaking cq presubmit step

Original issue's description:
> Update third_party/checkstyle to 7.6.1
>
> This CL updates third_party/checkstyle to 7.6.1 so checkstyle would
> work with Java 8 lambda features.
>
> BUG=703238
>
> Review-Url: https://codereview.chromium.org/2799303003
> Cr-Commit-Position: refs/heads/master@{#462968}
> Committed:
https://chromium.googlesource.com/chromium/src/+/dbce02f63421f7d446d6ef317b45...

TBR=agrieve@chromium.org,nyquist@chromium.org,jbudorick@chromium.org,klobag@c...
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=703238
==========

to

==========
Revert "Update third_party/checkstyle to 7.6.1"

This reverts commit dbce02f63421f7d446d6ef317b456f6ae911f63b.

Reason for revert:
Breaking cq presubmit step

Original issue's description:
> Update third_party/checkstyle to 7.6.1
>
> This CL updates third_party/checkstyle to 7.6.1 so checkstyle would
> work with Java 8 lambda features.
>
> BUG=703238
>
> Review-Url: https://codereview.chromium.org/2799303003
> Cr-Commit-Position: refs/heads/master@{#462968}
> Committed:
https://chromium.googlesource.com/chromium/src/+/dbce02f63421f7d446d6ef317b45...

TBR=agrieve@chromium.org,nyquist@chromium.org,jbudorick@chromium.org,klobag@c...
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=703238

Review-Url: https://codereview.chromium.org/2807753003 .
Cr-Commit-Position: refs/heads/master@{#463021}
Committed:
https://chromium.googlesource.com/chromium/src/+/6fb89ced75c50e77bc5c6a29bb82...
==========

[Alexei Svitkine (slow), 2017-04-07 22:26:36]

Committed patchset #1 (id:1) manually as
6fb89ced75c50e77bc5c6a29bb820534d16d5279 (presubmit successful).

[F, 2017-04-13 18:17:28]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.chromium.org/2820583002/ by zpeng@chromium.org.

The reason for reverting is: Will update when the missing file issue is fixed.