DrMemory: Avoid capture with no capture callback set

remoting/protocol/webrtc_frame_scheduler_simple.cc

Index: remoting/protocol/webrtc_frame_scheduler_simple.cc
diff --git a/remoting/protocol/webrtc_frame_scheduler_simple.cc b/remoting/protocol/webrtc_frame_scheduler_simple.cc
index 6f6d94895cdd46ca8c16d4c97150423a4e3fc5e4..fa72a71255bc7950ef53efe6c9325e2e94c3e38f 100644
--- a/remoting/protocol/webrtc_frame_scheduler_simple.cc
+++ b/remoting/protocol/webrtc_frame_scheduler_simple.cc
@@ -44,7 +44,7 @@ void WebrtcFrameSchedulerSimple::Pause(bool pause) {
   paused_ = pause;
   if (paused_) {
     capture_timer_.Stop();
-  } else if (!capture_callback_.is_null()) {
+  } else {
     ScheduleNextFrame(base::TimeTicks::Now());
   }
 }
@@ -112,8 +112,9 @@ void WebrtcFrameSchedulerSimple::OnFrameEncoded(
 }
 
 void WebrtcFrameSchedulerSimple::ScheduleNextFrame(base::TimeTicks now) {
-  // Don't capture frames when paused or target bitrate is 0.
-  if (paused_ || pacing_bucket_.rate() == 0)
+  // Don't capture frames when paused or target bitrate is 0 or there is
+  // no capture callback set.
+  if (paused_ || pacing_bucket_.rate() == 0 || capture_callback_.is_null())
     return;
 
   // If this is not the first frame then capture next frame after the previous