Rename AutoMute to SuspendBelowMinBitrate

Changes all instances throughout the WebRTC stack.

BUG=2436
R=mflodman@webrtc.org, stefan@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/3919004

git-svn-id: http://webrtc.googlecode.com/svn/trunk/webrtc@5130 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/video/video_send_stream.cc b/video/video_send_stream.cc
index 5ae1e94..e1a60ed 100644
--- a/video/video_send_stream.cc
+++ b/video/video_send_stream.cc
@@ -198,8 +198,8 @@
   image_process_->RegisterPreEncodeCallback(channel_,
                                             config_.pre_encode_callback);
 
-  if (config.auto_mute) {
-    codec_->EnableAutoMuting(channel_);
+  if (config.suspend_below_min_bitrate) {
+    codec_->SuspendBelowMinBitrate(channel_);
   }
 }