Nuke buffered latency mode. It's not actually working, and it's not used. It's just dead code com…

talk/media/webrtc/webrtcvideoengine2.cc

Index: talk/media/webrtc/webrtcvideoengine2.cc
diff --git a/talk/media/webrtc/webrtcvideoengine2.cc b/talk/media/webrtc/webrtcvideoengine2.cc
index d33d1909cf65fb1a7a1471ec0ea280d2ada6a509..6364808aa7b01f969087b2879a710da68fa1cd9f 100644
--- a/talk/media/webrtc/webrtcvideoengine2.cc
+++ b/talk/media/webrtc/webrtcvideoengine2.cc
@@ -1534,7 +1534,8 @@ bool WebRtcVideoChannel2::SetOptions(const VideoOptions& options) {
   LOG(LS_INFO) << "SetOptions: " << options.ToString();
   VideoOptions old_options = options_;
   options_.SetAll(options);
-  if (options_ == old_options) {
+
+  if (options_ == old_options && options_set_) {
     // No new options to set.
     return true;
   }
@@ -1542,10 +1543,12 @@ bool WebRtcVideoChannel2::SetOptions(const VideoOptions& options) {
     rtc::CritScope lock(&capturer_crit_);
     options_.cpu_overuse_detection.Get(&signal_cpu_adaptation_);
   }
+
   rtc::DiffServCodePoint dscp = options_.dscp.GetWithDefaultIfUnset(false)
                                     ? rtc::DSCP_AF41
                                     : rtc::DSCP_DEFAULT;
   MediaChannel::SetDscp(dscp);
+
   rtc::CritScope stream_lock(&stream_crit_);
   for (std::map<uint32, WebRtcVideoSendStream*>::iterator it =
            send_streams_.begin();
@@ -1553,6 +1556,7 @@ bool WebRtcVideoChannel2::SetOptions(const VideoOptions& options) {
        ++it) {
     it->second->SetOptions(options_);
   }
+  options_set_ = true;
   return true;
 }