Disable the autofill/wallet settings in chrome://settings/autofill

Disable the autofill/wallet settings in chrome://settings/autofill

Will merge this to M42, then revert on trunk.

BUG=460900
Committed: https://crrev.com/0d59aeae3e815c53b10fb0ffc1199be524c62f86
Cr-Commit-Position: refs/heads/master@{#317638}

[Evan Stade, 2015-02-23 19:01:44]

estade@chromium.org changed reviewers:
+ brettw@chromium.org

[Evan Stade, 2015-02-23 19:01:44]

the correct fix is here: https://codereview.chromium.org/950003002/

I'm slightly worried that some users will be whitelisted by sync and start
seeing these WIP settings pages in M42. This patch is designed to be a temporary
bandaid to make sure that doesn't happen.

[brettw, 2015-02-23 19:05:48]

lgtm

[Evan Stade, 2015-02-23 19:20:17]

The CQ bit was checked by estade@chromium.org

[commit-bot: I haz the power, 2015-02-23 19:21:13]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/949753006/1

[commit-bot: I haz the power, 2015-02-23 20:20:29]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-02-23 20:21:14]

Patchset 1 (id:??) landed as
https://crrev.com/0d59aeae3e815c53b10fb0ffc1199be524c62f86
Cr-Commit-Position: refs/heads/master@{#317638}