Fix some minor errors with the voice engine caused by the refactor CL https://codereview.webrtc.org…

talk/session/media/channel.cc

Index: talk/session/media/channel.cc
diff --git a/talk/session/media/channel.cc b/talk/session/media/channel.cc
index 8de8d379962e2aec5936ce9a2e04d11860c629e1..155015057a6919940030e3df86279d935f39989e 100644
--- a/talk/session/media/channel.cc
+++ b/talk/session/media/channel.cc
@@ -1480,7 +1480,7 @@ bool VoiceChannel::SetLocalContent_w(const MediaContentDescription* content,
   AudioRecvParameters recv_params = last_recv_params_;
   RtpParametersFromMediaDescription(audio, &recv_params);
   if (!media_channel()->SetRecvParameters(recv_params)) {
-    SafeSetError("Failed to set local video description recv parameters.",
+    SafeSetError("Failed to set local audio description recv parameters.",
                  error_desc);
     return false;
   }
@@ -1545,6 +1545,10 @@ bool VoiceChannel::SetRemoteContent_w(const MediaContentDescription* content,
     return false;
   }
 
+  if (audio->rtp_header_extensions_set()) {
+    MaybeCacheRtpAbsSendTimeHeaderExtension(audio->rtp_header_extensions());
+  }
+
   set_remote_content_direction(content->direction());
   ChangeState();
   return true;