Replace rtc::cricket::Settable with rtc::Maybe

talk/session/media/channel.cc

 /*
  * libjingle
  * Copyright 2004 Google Inc.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  *  1. Redistributions of source code must retain the above copyright notice,
  *     this list of conditions and the following disclaimer.
  *  2. Redistributions in binary form must reproduce the above copyright notice,
@@ skipping 1484 matching lines @@
     return false;
   }
 
   if (!SetRtpTransportParameters_w(content, action, CS_REMOTE, error_desc)) {
     return false;
   }
 
   AudioSendParameters send_params = last_send_params_;
   RtpSendParametersFromMediaDescription(audio, &send_params);
   if (audio->agc_minus_10db()) {
-    send_params.options.adjust_agc_delta.Set(kAgcMinus10db);
+    send_params.options.adjust_agc_delta = rtc::Maybe<int>(kAgcMinus10db);
   }
   if (!media_channel()->SetSendParameters(send_params)) {
     SafeSetError("Failed to set remote audio description send parameters.",
                  error_desc);
     return false;
   }
   last_send_params_ = send_params;
 
   // TODO(pthatcher): Move remote streams into AudioRecvParameters,
   // and only give it to the media channel once we have a local
@@ skipping 266 matching lines @@
   }
 
 
   if (!SetRtpTransportParameters_w(content, action, CS_REMOTE, error_desc)) {
     return false;
   }
 
   VideoSendParameters send_params = last_send_params_;
   RtpSendParametersFromMediaDescription(video, &send_params);
   if (video->conference_mode()) {
-    send_params.options.conference_mode.Set(true);
+    send_params.options.conference_mode = rtc::Maybe<bool>(true);
   }
   if (!media_channel()->SetSendParameters(send_params)) {
     SafeSetError("Failed to set remote video description send parameters.",
                  error_desc);
     return false;
   }
   last_send_params_ = send_params;
 
   // TODO(pthatcher): Move remote streams into VideoRecvParameters,
   // and only give it to the media channel once we have a local
@@ skipping 485 matching lines @@
   return (data_channel_type_ == DCT_RTP);
 }
 
 void DataChannel::OnStreamClosedRemotely(uint32_t sid) {
   rtc::TypedMessageData<uint32_t>* message =
       new rtc::TypedMessageData<uint32_t>(sid);
   signaling_thread()->Post(this, MSG_STREAMCLOSEDREMOTELY, message);
 }
 
 }  // namespace cricket