Fixing bug where Connection drops packets when presumed writable.

webrtc/pc/channel.h

Index: webrtc/pc/channel.h
diff --git a/webrtc/pc/channel.h b/webrtc/pc/channel.h
index 211f810b8510f451e3b0b2cc87c1ac70a3b57d5d..37eee47c79d6d5456722c34514acbaf00ff4325a 100644
--- a/webrtc/pc/channel.h
+++ b/webrtc/pc/channel.h
@@ -222,7 +222,8 @@ class BaseChannel
   void OnSelectedCandidatePairChanged(
       TransportChannel* channel,
       CandidatePairInterface* selected_candidate_pair,
-      int last_sent_packet_id);
+      int last_sent_packet_id,
+      bool ready_to_send);
 
   bool PacketIsRtcp(const TransportChannel* channel, const char* data,
                     size_t len);