Revert of Add Search Service in Enhanced Bookmark Bridge

Revert of Add Search Service in Enhanced Bookmark Bridge (patchset #6 id:100001 of https://codereview.chromium.org/637323005/)

Reason for revert:
Broke compilation in http://build.chromium.org/p/chromium.gpu/builders/Android%20Debug%20%28Nexus%207%29/builds/14002

Original issue's description:
> Add Search Service in Enhanced Bookmark Bridge
>
> A Search client is created during initialization of
> EnhancedBookmarkBridge. And when the bridge destructs, search service is
> also destroyed.
>
> BUG=415774
>
> Committed: https://crrev.com/e52346f194e9f2d097b4f6d3fbfa359eca7c92df
> Cr-Commit-Position: refs/heads/master@{#302107}

TBR=tedchoc@chromium.org,danduong@chromium.org,kkimlabs@chromium.org,noyau@chromium.org,lpromero@chromium.org,ianwen@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=415774
Committed: https://crrev.com/1491f336d849dcf168cc8832e91a7c8213dd2a7f
Cr-Commit-Position: refs/heads/master@{#302130}

[Ken Russell (switch to Gerrit), 2014-10-30 19:19:46]

Created Revert of Add Search Service in Enhanced Bookmark Bridge

[commit-bot: I haz the power, 2014-10-30 19:20:55]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/688883002/1

[commit-bot: I haz the power, 2014-10-30 19:22:54]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-10-30 19:23:27]

Patchset 1 (id:??) landed as
https://crrev.com/1491f336d849dcf168cc8832e91a7c8213dd2a7f
Cr-Commit-Position: refs/heads/master@{#302130}