Move suspend_below_min_bitrate from VideoOptions to MediaConfig.

webrtc/api/webrtcsession.cc

Index: webrtc/api/webrtcsession.cc
diff --git a/webrtc/api/webrtcsession.cc b/webrtc/api/webrtcsession.cc
index e5cea14439151afdbc420e77eb7cd09f812a3781..6bfa8a5eb6bcc5221050ae9b7bc962d1674cc2d8 100644
--- a/webrtc/api/webrtcsession.cc
+++ b/webrtc/api/webrtcsession.cc
@@ -597,15 +597,6 @@ bool WebRtcSession::Initialize(
     }
   }
 
-  // Find Suspend Below Min Bitrate constraint.
-  if (FindConstraint(
-          constraints,
-          MediaConstraintsInterface::kEnableVideoSuspendBelowMinBitrate,
-          &value,
-          NULL)) {
-    video_options_.suspend_below_min_bitrate = rtc::Optional<bool>(value);
-  }
-
   SetOptionFromOptionalConstraint(constraints,
       MediaConstraintsInterface::kScreencastMinBitrate,
       &video_options_.screencast_min_bitrate_kbps);