Make setSinkId try to set the sink even if the given new sinkId equals the current sinkId.

Make setSinkId try to set the sink even if the given new sinkId equals the current sinkId.

Given that we currently do not support automatically resetting the sink when the source of an HTMLMediaElement
changes, this patch helps avoid the following problematic scenario:

elem.setSinkId(mySink);
elem.src = newSrc; // audio will not necessarily be rendered on mySink
elem.setSinkId(mySink); //does nothing because mySink equals the sinkId for the element.


BUG=438023
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=197677

[Guido Urdaneta, 2015-06-23 12:07:40]

guidou@chromium.org changed reviewers:
+ tommi@chromium.org

[Guido Urdaneta, 2015-06-23 12:07:55]

Hi, please review.

[tommi (sloooow) - chröme, 2015-06-23 20:21:49]

The CQ bit was checked by tommi@chromium.org

[tommi (sloooow) - chröme, 2015-06-23 20:21:49]

lgtm

[commit-bot: I haz the power, 2015-06-23 20:22:17]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1202193002/1

[commit-bot: I haz the power, 2015-06-23 22:06:48]

Committed patchset #1 (id:1) as
https://src.chromium.org/viewvc/blink?view=rev&revision=197677