Revert of Implementing a BLE connection finder.

Revert of Implementing a BLE connection finder. (patchset #6 id:100001 of https://codereview.chromium.org/1094273003/)

Reason for revert:
This change broke the chromium perf dashboard:

https://build.chromium.org/p/chromium/builders/Linux/builds/61221

by adding a new static initializer:

const std::string kSmartLockServiceUUID =
    "b3b7e28e-a000-3e17-bd86-6e97b9e28c11";

I think you want static const char* instead.

Original issue's description:
> Implementing a BLE connection finder.
>
> This CL adds a connection finder class. The connection finder scans for
> Bluetooth Low Energy devices advertising a given target service.
>
> The current version only works when the remote device advertising the
> target service is sending all its primary services UUID.
>
> BUG=479673
> R=msarda
> TBR=tengs
>
> Committed: https://crrev.com/f56835d5211fc533a02f143e06eb310764f6b901
> Cr-Commit-Position: refs/heads/master@{#326807}

TBR=msarda@chromium.org,tengs@chromium.org,sacomoto@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=479673
Committed: https://crrev.com/79289369bee811b37d810710fbcfe44a822d525c
Cr-Commit-Position: refs/heads/master@{#326826}

[Justin Donnelly, 2015-04-24 17:23:41]

Created Revert of Implementing a BLE connection finder.

[commit-bot: I haz the power, 2015-04-24 17:24:15]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1105863003/1

[commit-bot: I haz the power, 2015-04-24 17:25:22]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-04-24 17:26:14]

Patchset 1 (id:??) landed as
https://crrev.com/79289369bee811b37d810710fbcfe44a822d525c
Cr-Commit-Position: refs/heads/master@{#326826}