Revert "Allow declarative webrequest and webrequest in extensions."

Revert "Allow declarative webrequest and webrequest in extensions."

Causing compile failures on Linux GN trybots.

> - Update _api_features.json and _permissions.json to allow the following features in extensions:
>  - declarativeWebrequest,
>  - events
>  - webRequest
>  - webViewRequest
>
> - Move web_view_request_custom_bindings.js and web_view_request.json to extensions.
>
> - Remove ExtensionsAPIClient::GetRuleRegistry() since RuleRegisteryService has been moved to extension.
>
> - Clean up extensions/extensions.gyp.
>
> TBR=sky@chromium.org
> BUG=352293
NOTREECHECKS=true
NOTRY=true
TBR=fsamuel@chromium.org,rockot@chromium.org,sky@chromium.org

Committed: https://crrev.com/e650b32b0453a45e0bdcb248f93092f1bd1f817f
Cr-Commit-Position: refs/heads/master@{#297471}

[dcheng, 2014-09-30 19:00:34]

dcheng@chromium.org changed reviewers:
+ fsamuel@chromium.org, rockot@chromium.org, sky@chromium.org

[dcheng, 2014-09-30 19:02:00]

The CQ bit was checked by dcheng@chromium.org

[dcheng, 2014-09-30 19:02:01]

This is a revert of https://codereview.chromium.org/596003002, which is probably
causing the build failures on Linux GN bots:
http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...
http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...

I'm not sure why some builds are succeeding and some are failing; I'm guessing
there's a missing dependency that causes the grd changes to be rebuilt for some
cycles and not others.

[commit-bot: I haz the power, 2014-09-30 19:02:58]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/620623002/1

[dcheng, 2014-09-30 19:03:09]

dcheng@chromium.org changed reviewers:
+ hanxi@chromium.org

[dcheng, 2014-09-30 19:03:09]

+hanxi on the right patch this time (sorry for the spam >_<)

[commit-bot: I haz the power, 2014-09-30 19:04:32]

Committed patchset #1 (id:1) as cb13917a6caf4fe553712b7c76e4999136cb4318

[commit-bot: I haz the power, 2014-09-30 19:05:15]

Patchset 1 (id:??) landed as
https://crrev.com/e650b32b0453a45e0bdcb248f93092f1bd1f817f
Cr-Commit-Position: refs/heads/master@{#297471}