bluetooth: Remove reference to MultiDeviceAdapter on browser-side.

bluetooth: Remove reference to MultiDeviceAdapter on browser-side.

Three sided patch because we need to change the reference to MultiDeviceAdapter in blink:

 [1] http://crrev.com/1230023010
 [2] http://crrev.com/1232123010
 [3] This patch.

BUG=499552
Committed: https://crrev.com/86c3112710215cbb8ccc74fb2bd7a85d5e19dec7
Cr-Commit-Position: refs/heads/master@{#339889}

[ortuno, 2015-07-17 17:46:23]

ortuno@chromium.org changed reviewers:
+ jyasskin@chromium.org

[ortuno, 2015-07-17 17:46:24]

@jyasskin: Ready for review.

[Jeffrey Yasskin, 2015-07-18 00:40:48]

lgtm

[ortuno, 2015-07-20 17:09:01]

ortuno@chromium.org changed reviewers:
+ scheib@chromium.org

[ortuno, 2015-07-20 17:09:01]

@scheib: PTAL

[scheib, 2015-07-21 00:21:26]

LGTM

[ortuno, 2015-07-22 15:58:09]

The CQ bit was checked by ortuno@chromium.org

[ortuno, 2015-07-22 15:58:09]

The patchset sent to the CQ was uploaded after l-g-t-m from
jyasskin@chromium.org
Link to the patchset: https://codereview.chromium.org/1244603002/#ps40001
(title: "Merge with ToT")

[commit-bot: I haz the power, 2015-07-22 15:58:44]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1244603002/40001

[commit-bot: I haz the power, 2015-07-22 16:37:31]

Committed patchset #3 (id:40001)

[commit-bot: I haz the power, 2015-07-22 16:38:29]

Patchset 3 (id:??) landed as
https://crrev.com/86c3112710215cbb8ccc74fb2bd7a85d5e19dec7
Cr-Commit-Position: refs/heads/master@{#339889}