Remove UpdateSsrcs from EncoderStateFeedback.

webrtc/video/call.cc

Index: webrtc/video/call.cc
diff --git a/webrtc/video/call.cc b/webrtc/video/call.cc
index a73932509b1c7876eb747fe43f164c6b77cd8f75..5d898b6686f3987c65a27acd4ea0a41cb7963b79 100644
--- a/webrtc/video/call.cc
+++ b/webrtc/video/call.cc
@@ -180,8 +180,9 @@ Call::Call(const Call::Config& config)
 
   // TODO(pbos): Remove base channel when CreateReceiveChannel no longer
   // requires one.
-  CHECK(channel_group_->CreateSendChannel(
-      base_channel_id_, 0, &transport_adapter_, num_cpu_cores_, 1, true));
+  CHECK(channel_group_->CreateSendChannel(base_channel_id_, 0,
+                                          &transport_adapter_, num_cpu_cores_,
+                                          std::vector<uint32_t>(1, 0), true));
 

[sprang_webrtc, 2015/07/20 13:45:22]

This will create a channel with an encoder with ssrc 0, and that's OK since this
is only the base channel? 
A comment might be nice :)

[pbos-webrtc, 2015/07/20 13:59:03]

Yeah, no. I shouldn't get away with this. Adding code that handles an empty
vector instead. PTAL. :)

   if (config.overuse_callback) {
     overuse_observer_proxy_.reset(