Fix Bluetooth Classic device polling issue.

Fix Bluetooth Classic device polling issue.

With the recent device polling changes
(https://codereview.chromium.org/424093004/), any failure in enumerating
devices/services prevents the background polling task from reporting
changes (to avoid reporting inconsistent configuration). However, when
devices are offline and polling is done in "discovery" mode,
enumerating services fails because the underlying SDP request fails.
The workaround if to ask for cached services only instead, so that at
least the services already previously known are returned and the
polling operation can succeed.

BUG=396337
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=290061

[xiyuan, 2014-08-14 19:35:29]

https://codereview.chromium.org/476823003/diff/1/device/bluetooth/bluetooth_t...
File device/bluetooth/bluetooth_task_manager_win.cc (right):

https://codereview.chromium.org/476823003/diff/1/device/bluetooth/bluetooth_t...
device/bluetooth/bluetooth_task_manager_win.cc:573: goto TryAgain;
Can we get rid of the "goto"?

[rpaquay, 2014-08-15 19:55:33]

https://codereview.chromium.org/476823003/diff/1/device/bluetooth/bluetooth_t...
File device/bluetooth/bluetooth_task_manager_win.cc (right):

https://codereview.chromium.org/476823003/diff/1/device/bluetooth/bluetooth_t...
device/bluetooth/bluetooth_task_manager_win.cc:573: goto TryAgain;
On 2014/08/14 19:35:29, xiyuan wrote:
> Can we get rid of the "goto"?

Done.

[xiyuan, 2014-08-15 20:04:25]

Awesome. LGTM!

[rpaquay, 2014-08-15 20:31:02]

The CQ bit was checked by rpaquay@chromium.org

[commit-bot: I haz the power, 2014-08-15 20:35:54]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/rpaquay@chromium.org/476823003/20001

[commit-bot: I haz the power, 2014-08-16 00:08:37]

Committed patchset #2 (20001) as 290061