Reland of: Adding error output param to SetConfiguration, using new RTCError type.

webrtc/media/base/mediachannel.h

 /*
  *  Copyright (c) 2004 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 115 matching lines @@
     // WebRtcVideoChannel2::AddRecvStream copies it to the created
     // WebRtcVideoReceiveStream, where it is returned by the
     // SmoothsRenderedFrames method. This method is used by the
     // VideoReceiveStream, where the value is passed on to the
     // IncomingVideoStream constructor.
     bool disable_prerenderer_smoothing = false;
 
     // Enables periodic bandwidth probing in application-limited region.
     bool periodic_alr_bandwidth_probing = false;
   } video;
+
+  bool operator==(const MediaConfig& o) const {
+    return enable_dscp == o.enable_dscp &&
+           video.enable_cpu_overuse_detection ==
+               o.video.enable_cpu_overuse_detection &&
+           video.suspend_below_min_bitrate ==
+               o.video.suspend_below_min_bitrate &&
+           video.disable_prerenderer_smoothing ==
+               o.video.disable_prerenderer_smoothing &&
+           video.periodic_alr_bandwidth_probing ==
+               o.video.periodic_alr_bandwidth_probing;
+  }
+
+  bool operator!=(const MediaConfig& o) const { return !(*this == o); }
 };
 
 // Options that can be applied to a VoiceMediaChannel or a VoiceMediaEngine.
 // Used to be flags, but that makes it hard to selectively apply options.
 // We are moving all of the setting of options to structs like this,
 // but some things currently still use flags.
 struct AudioOptions {
   void SetAll(const AudioOptions& change) {
     SetFrom(&echo_cancellation, change.echo_cancellation);
     SetFrom(&auto_gain_control, change.auto_gain_control);
@@ skipping 1035 matching lines @@
                    const char*,
                    size_t> SignalDataReceived;
   // Signal when the media channel is ready to send the stream. Arguments are:
   //     writable(bool)
   sigslot::signal1<bool> SignalReadyToSend;
 };
 
 }  // namespace cricket
 
 #endif  // WEBRTC_MEDIA_BASE_MEDIACHANNEL_H_