Restore the architecture check for Pepper plugins.

Restore the architecture check for Pepper plugins.

Latest version of PepperFlash now includes the correct x-ppapi-arch on x64, so commit 0bc0349 can be safely reverted.

BUG=458894
Committed: https://crrev.com/e3b1bfc1831c6d78964d0636c63f3b1ab4ec06f4
Cr-Commit-Position: refs/heads/master@{#322058}

[Will Harris, 2015-03-24 04:57:16]

wfh@chromium.org changed reviewers:
+ cpu@chromium.org

[Will Harris, 2015-03-24 04:57:47]

PTAL

[cpu_(ooo_6.6-7.5), 2015-03-24 19:15:25]

thanks for following up with this.

LGTM

[cpu_(ooo_6.6-7.5), 2015-03-24 19:16:52]

The CQ bit was checked by cpu@chromium.org

[Will Harris, 2015-03-24 19:16:59]

The CQ bit was checked by wfh@chromium.org

[commit-bot: I haz the power, 2015-03-24 19:17:44]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1030803002/1

[commit-bot: I haz the power, 2015-03-24 20:10:56]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-03-24 20:11:36]

Patchset 1 (id:??) landed as
https://crrev.com/e3b1bfc1831c6d78964d0636c63f3b1ab4ec06f4
Cr-Commit-Position: refs/heads/master@{#322058}