Revert of Add the 'Ask Google' option to the spelling submenu on Mac.

Revert of Add the 'Ask Google' option to the spelling submenu on Mac. (patchset #1 id:1 of https://codereview.chromium.org/1213133004/)

Reason for revert:
Reverting after discussion with Rachel.

Original issue's description:
> Add the 'Ask Google' option to the spelling submenu on Mac.
>
> For some reason the "Ask Google" option does not appear in the right-
> click menu on Mac, even though it's present in the Settings menu.
>
> BUG=5102
>
> Committed: https://crrev.com/8657b1d9e7c2040de20632fdf2ede3765cec4d9c
> Cr-Commit-Position: refs/heads/master@{#336790}

TBR=lazyboy@chromium.org,juliusa@google.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=5102
Committed: https://crrev.com/8f7a3cfb41e95259e9bc00deb90bd9dce144fb46
Cr-Commit-Position: refs/heads/master@{#341594}

[please use gerrit instead, 2015-08-03 19:53:39]

Created Revert of Add the 'Ask Google' option to the spelling submenu on Mac.

[commit-bot: I haz the power, 2015-08-03 19:54:31]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1264583003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1264583003/1

[commit-bot: I haz the power, 2015-08-03 19:55:56]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-08-03 19:56:57]

Patchset 1 (id:??) landed as
https://crrev.com/8f7a3cfb41e95259e9bc00deb90bd9dce144fb46
Cr-Commit-Position: refs/heads/master@{#341594}