Copy data bytes in Web Crypto's importKey() and verify() operations

Copy data bytes in Web Crypto's importKey() and verify() operations
BEFORE normalizing the algorithm.

This matches the change in the spec:
https://github.com/w3c/webcrypto/commit/ccd586cc2cf0c7fe8db524622dd35b1fa39fe7c4

The motivation is consistency with other functions. Algorithm
normalization might modify the data buffer.

BUG=641494
Committed: https://crrev.com/523dbeff770eac1be9c6eb8b5efe41be71a2d628
Cr-Commit-Position: refs/heads/master@{#417010}

[eroman, 2016-09-06 22:03:45]

The CQ bit was checked by eroman@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-09-06 22:04:19]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[eroman, 2016-09-06 23:08:54]

The CQ bit was checked by eroman@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-09-06 23:09:52]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[eroman, 2016-09-06 23:11:15]

eroman@chromium.org changed reviewers:
+ rsleevi@chromium.org

[commit-bot: I haz the power, 2016-09-07 00:38:44]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2016-09-07 00:38:44]

Dry run: This issue passed the CQ dry run.

[Ryan Sleevi, 2016-09-07 18:41:39]

lgtm

[eroman, 2016-09-07 18:43:00]

The CQ bit was checked by eroman@chromium.org

[commit-bot: I haz the power, 2016-09-07 18:43:35]

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, 2016-09-07 18:48:24]

Committed patchset #3 (id:40001)

[commit-bot: I haz the power, 2016-09-07 18:50:32]

Description was changed from

==========
Copy data bytes in Web Crypto's importKey() and verify() operations
BEFORE normalizing the algorithm.

This matches the change in the spec:
https://github.com/w3c/webcrypto/commit/ccd586cc2cf0c7fe8db524622dd35b1fa39fe7c4

The motivation is consistency with other functions. Algorithm
normalization might modify the data buffer.

BUG=641494
==========

to

==========
Copy data bytes in Web Crypto's importKey() and verify() operations
BEFORE normalizing the algorithm.

This matches the change in the spec:
https://github.com/w3c/webcrypto/commit/ccd586cc2cf0c7fe8db524622dd35b1fa39fe7c4

The motivation is consistency with other functions. Algorithm
normalization might modify the data buffer.

BUG=641494

Committed: https://crrev.com/523dbeff770eac1be9c6eb8b5efe41be71a2d628
Cr-Commit-Position: refs/heads/master@{#417010}
==========

[commit-bot: I haz the power, 2016-09-07 18:50:33]

Patchset 3 (id:??) landed as
https://crrev.com/523dbeff770eac1be9c6eb8b5efe41be71a2d628
Cr-Commit-Position: refs/heads/master@{#417010}