Revert of [Extensions Toolbar] Add a finch config for the redesign

Revert of [Extensions Toolbar] Add a finch config for the redesign (patchset #2 id:60001 of https://codereview.chromium.org/1363463002/ )

Reason for revert:
This is causing time out for XP Tests: browser_tests: DeclarativeContentApiTest.ShowPageActionWithoutPageAction.

Original issue's description:
> [Extensions Toolbar] Add a finch config for the redesign
>
> Add an entry in field trials for the extension action redesign, and
> fix any tests that fail with it as a default.
>
> BUG=533101
> TBR=avi@chromium.org for micro cocoa change
>
> Committed: https://crrev.com/ca056fb34f9003262f28061856042ed87ed865c4
> Cr-Commit-Position: refs/heads/master@{#350296}

TBR=finnur@chromium.org,thakis@chromium.org,rdevlin.cronin@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=533101
Committed: https://crrev.com/c059a0e8183000755ef106f5f74c029386cc7cfb
Cr-Commit-Position: refs/heads/master@{#350341}

[huangs, 2015-09-23 13:46:42]

Created Revert of [Extensions Toolbar] Add a finch config for the redesign

[huangs, 2015-09-23 13:47:28]

The CQ bit was checked by huangs@chromium.org

[commit-bot: I haz the power, 2015-09-23 13:48:04]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1363943002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1363943002/1

[commit-bot: I haz the power, 2015-09-23 14:02:10]

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

[commit-bot: I haz the power, 2015-09-23 14:02:11]

Failed to commit the patch.

[commit-bot: I haz the power, 2015-09-23 14:02:28]

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

[huangs, 2015-09-23 18:12:50]

The CQ bit was checked by huangs@chromium.org

[commit-bot: I haz the power, 2015-09-23 18:15:57]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1363943002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1363943002/1

[commit-bot: I haz the power, 2015-09-23 18:20:22]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-09-23 18:35:46]

Patchset 1 (id:??) landed as
https://crrev.com/c059a0e8183000755ef106f5f74c029386cc7cfb
Cr-Commit-Position: refs/heads/master@{#350341}