Post StopOnEncodeThread to the correct thread.

remoting/host/video_scheduler.cc

Index: remoting/host/video_scheduler.cc
diff --git a/remoting/host/video_scheduler.cc b/remoting/host/video_scheduler.cc
index c2a797e111f80f0070d61d44e0a66419ced4f3ad..e937bd4812ddb63b366830c67edf6ab3eb920913 100644
--- a/remoting/host/video_scheduler.cc
+++ b/remoting/host/video_scheduler.cc
@@ -180,7 +180,7 @@ void VideoScheduler::StopOnCaptureThread(const base::Closure& done_task) {
   // otherwise tearing down |capturer_| will crash it.  See crbug.com/163641.
   // TODO(wez): Make it safe to tear down capturer while buffers remain, and
   // remove this work-around.
-  capture_task_runner_->PostTask(FROM_HERE,
+  encode_task_runner_->PostTask(FROM_HERE,
       base::Bind(&VideoScheduler::StopOnEncodeThread, this, done_task));
 }