Fix nx crash.

Fix nx crash.

It's interesting that NX doesn't list the XTest devices. In any case, we should be fine just returning in this case (if there's no device there's no mapping that we need to fix).

BUG=152079
TEST=it2me session on nx

Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=158704

[Lambros, 2012-09-25 16:52:46]

lgtm

[Jamie, 2012-09-25 18:15:46]

http://codereview.chromium.org/10986023/diff/1/remoting/host/event_executor_l...
File remoting/host/event_executor_linux.cc (right):

http://codereview.chromium.org/10986023/diff/1/remoting/host/event_executor_l...
remoting/host/event_executor_linux.cc:306: LOG(ERROR) << "Cannot find XTest
device.";
Nit: If we're saying that this situation is expected on NX, then the log should
probably not be an error. INFO seems right in this situation.

[commit-bot: I haz the power, 2012-09-25 21:54:08]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/rmsousa@chromium.org/10986023/5001

[commit-bot: I haz the power, 2012-09-26 00:15:52]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/rmsousa@chromium.org/10986023/5001

[commit-bot: I haz the power, 2012-09-26 00:35:56]

Change committed as 158704