Remove BaseSession::SignalNewDescription. It was only used by GTP and now just clutters the code.

webrtc/p2p/base/session.h

Index: webrtc/p2p/base/session.h
diff --git a/webrtc/p2p/base/session.h b/webrtc/p2p/base/session.h
index 6214dad0b1239491ad307d554fb90462570fc4e6..8f9e308a8694e9491c119d3d65d448bad8955fec 100644
--- a/webrtc/p2p/base/session.h
+++ b/webrtc/p2p/base/session.h
@@ -412,8 +412,6 @@ class BaseSession : public sigslot::has_slots<>,
   Error error_;
   std::string error_desc_;
 
-  // Fires the new description signal according to the current state.
-  virtual void SignalNewDescription();
   // This method will delete the Transport and TransportChannelImpls
   // and replace those with the Transport object of the first
   // MediaContent in bundle_group.
@@ -439,9 +437,6 @@ class BaseSession : public sigslot::has_slots<>,
                                       const std::string& content_name,
                                       TransportDescription* info);
 
-  // Gets the ContentAction and ContentSource according to the session state.
-  bool GetContentAction(ContentAction* action, ContentSource* source);
-
   rtc::Thread* const signaling_thread_;
   rtc::Thread* const worker_thread_;
   PortAllocator* const port_allocator_;