[Cleanup] Eliminate a bit of console spam.

[Cleanup] Eliminate a bit of console spam.

Stop calling BluetoothAdapter::IsDiscoverable() on non-ChromeOS platforms, as
this method is only implemented on ChromeOS, and the feature code that was
calling it currently only runs on ChromeOS.

BUG=488263
TEST=none
R=tengs@chromium.org

Committed: https://crrev.com/d6c1d86967b07198a9c62cf32802ac6ed6e48e48
Cr-Commit-Position: refs/heads/master@{#330867}

[Tim Song, 2015-05-20 07:07:33]

lgtm

[Ilya Sherman, 2015-05-20 07:16:18]

The CQ bit was checked by isherman@chromium.org

[commit-bot: I haz the power, 2015-05-20 07:16:42]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1148713002/1

[commit-bot: I haz the power, 2015-05-20 07:46:27]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-05-20 07:46:28]

Try jobs failed on following builders:
  win8_chromium_rel on tryserver.chromium.win (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.win/builders/win8_chromium_rel...)

[Ilya Sherman, 2015-05-20 23:14:52]

The CQ bit was checked by isherman@chromium.org

[Ilya Sherman, 2015-05-20 23:14:53]

The patchset sent to the CQ was uploaded after l-g-t-m from tengs@chromium.org
Link to the patchset: https://codereview.chromium.org/1148713002/#ps20001
(title: "Sing a lullaby to soothe the Windows compiler's soul.")

[commit-bot: I haz the power, 2015-05-20 23:15:15]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1148713002/20001

[commit-bot: I haz the power, 2015-05-21 01:20:06]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-05-21 01:20:53]

Patchset 2 (id:??) landed as
https://crrev.com/d6c1d86967b07198a9c62cf32802ac6ed6e48e48
Cr-Commit-Position: refs/heads/master@{#330867}