Limit target encoder bitrate change frequency in the frame scheduler.

remoting/protocol/webrtc_connection_to_host.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "remoting/protocol/webrtc_connection_to_host.h"
 
 #include <utility>
 
 #include "base/strings/string_util.h"
 #include "jingle/glue/thread_wrapper.h"
@@ skipping 19 matching lines @@
 void WebrtcConnectionToHost::Connect(
     std::unique_ptr<Session> session,
     scoped_refptr<TransportContext> transport_context,
     HostEventCallback* event_callback) {
   DCHECK(client_stub_);
   DCHECK(clipboard_stub_);
 
   transport_.reset(new WebrtcTransport(
       jingle_glue::JingleThreadWrapper::current(), transport_context, this));
 
-  transport_->audio_module()->SetAudioTaskRunner(audio_decode_task_runner_);
+  if (audio_decode_task_runner_)
+    transport_->audio_module()->SetAudioTaskRunner(audio_decode_task_runner_);
 
   session_ = std::move(session);
   session_->SetEventHandler(this);
   session_->SetTransport(transport_.get());
 
   event_callback_ = event_callback;
 
   SetState(CONNECTING, OK);
 }
 
@@ skipping 167 matching lines @@
 
   if (state != state_) {
     state_ = state;
     error_ = error;
     event_callback_->OnConnectionState(state_, error_);
   }
 }
 
 }  // namespace protocol
 }  // namespace remoting