device/bluetooth: Add checks to BluetoothAdapter overrides.

device/bluetooth: Add checks to BluetoothAdapter overrides.

This CL adds if conditions to check if the notification comes from
the target BluetoothAdapter.

BUG=441581
TEST=device_unittests --gtest_filter=*BluetoothAudioSink*

Committed: https://crrev.com/8ad6c0a698fc57959eacb300b47bc5e9bdceb5c1
Cr-Commit-Position: refs/heads/master@{#322624}

[Miao, 2015-03-27 18:48:47]

mcchou@chromium.org changed reviewers:
+ armansito@chromium.org

[Miao, 2015-03-27 18:48:47]

This CL is ready for review.

[armansito, 2015-03-27 18:50:35]

lgtm

[Miao, 2015-03-27 18:51:41]

The CQ bit was checked by mcchou@chromium.org

[commit-bot: I haz the power, 2015-03-27 18:52:10]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1038213004/1

[commit-bot: I haz the power, 2015-03-27 19:50:15]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-03-27 19:50:49]

Patchset 1 (id:??) landed as
https://crrev.com/8ad6c0a698fc57959eacb300b47bc5e9bdceb5c1
Cr-Commit-Position: refs/heads/master@{#322624}