Re-enable ProofVerifierChromium tests by generating a signature

Re-enable ProofVerifierChromium tests by generating a signature
dyanmically instead of using the old (and now invalid) signature.

BUG=718895
Review-Url: https://codereview.chromium.org/2908413002
Cr-Commit-Position: refs/heads/master@{#475646}
Committed: https://chromium.googlesource.com/chromium/src/+/0af6d95f72025aae5c137b54acfcb9b700a66bda

[Ryan Hamilton, 2017-05-30 17:28:51]

Patchset #2 (id:20001) has been deleted

[Ryan Hamilton, 2017-05-30 17:29:35]

Patchset #2 (id:40001) has been deleted

[Ryan Hamilton, 2017-05-30 17:29:57]

rch@chromium.org changed reviewers:
+ zhongyi@chromium.org

[Zhongyi Shi, 2017-05-30 18:47:44]

The CQ bit was checked by zhongyi@chromium.org

[Zhongyi Shi, 2017-05-30 18:47:45]

lgtm

[commit-bot: I haz the power, 2017-05-30 18:48:24]

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, 2017-05-30 20:13:30]

CQ is committing da patch.

Bot data: {"patchset_id": 50001, "attempt_start_ts": 1496170064435850,
"parent_rev": "4bfa586a0b0ca582e7fe9b6cb552937681280600", "commit_rev":
"0af6d95f72025aae5c137b54acfcb9b700a66bda"}

[commit-bot: I haz the power, 2017-05-30 20:13:41]

Description was changed from

==========
Re-enable ProofVerifierChromium tests by generating a signature
dyanmically instead of using the old (and now invalid) signature.

BUG=718895
==========

to

==========
Re-enable ProofVerifierChromium tests by generating a signature
dyanmically instead of using the old (and now invalid) signature.

BUG=718895

Review-Url: https://codereview.chromium.org/2908413002
Cr-Commit-Position: refs/heads/master@{#475646}
Committed:
https://chromium.googlesource.com/chromium/src/+/0af6d95f72025aae5c137b54acfc...
==========

[commit-bot: I haz the power, 2017-05-30 20:13:41]

Committed patchset #2 (id:50001) as
https://chromium.googlesource.com/chromium/src/+/0af6d95f72025aae5c137b54acfc...