Support for onbufferedamountlow

talk/app/webrtc/objc/RTCDataChannel.mm

Index: talk/app/webrtc/objc/RTCDataChannel.mm
diff --git a/talk/app/webrtc/objc/RTCDataChannel.mm b/talk/app/webrtc/objc/RTCDataChannel.mm
index 4fb03c284ebbb7e2e1ca8427bfabfee882cfc54f..b0ceb464530b12e40891a690e45358e1165c07f1 100644
--- a/talk/app/webrtc/objc/RTCDataChannel.mm
+++ b/talk/app/webrtc/objc/RTCDataChannel.mm
@@ -43,6 +43,11 @@ class RTCDataChannelObserver : public DataChannelObserver {
     [_channel.delegate channelDidChangeState:_channel];
   }
 
+  void OnBufferedAmountChange(uint64 previous_amount) override {

[tkchin_webrtc, 2015/06/29 22:18:30]

For .mm files naming style isn't exactly fixed, but in this case would say to
use camel casing (previousAmount) to match rest of ObjC calls.

[bemasc2, 2015/06/29 22:53:17]

Done.

+    [_channel.delegate channelDidChangeBufferedAmount:_channel
+                                       previousAmount:previous_amount];
+  }
+
   void OnMessage(const DataBuffer& buffer) override {
     if (!_channel.delegate) {
       return;