Make Port (and subclasses) fully "Network"-based, instead of IP-based.

webrtc/p2p/base/stunport.h

Index: webrtc/p2p/base/stunport.h
diff --git a/webrtc/p2p/base/stunport.h b/webrtc/p2p/base/stunport.h
index de5127c67156e9ec1b9a47d4910a74e2ac4e3b09..8fbc0d52fa46459bb90433626085373dbe9329cd 100644
--- a/webrtc/p2p/base/stunport.h
+++ b/webrtc/p2p/base/stunport.h
@@ -54,7 +54,6 @@ class UDPPort : public Port {
   static UDPPort* Create(rtc::Thread* thread,
                          rtc::PacketSocketFactory* factory,
                          rtc::Network* network,
-                         const rtc::IPAddress& ip,
                          uint16_t min_port,
                          uint16_t max_port,
                          const std::string& username,
@@ -62,7 +61,7 @@ class UDPPort : public Port {
                          const std::string& origin,
                          bool emit_local_for_anyaddress) {
     UDPPort* port =
-        new UDPPort(thread, factory, network, ip, min_port, max_port, username,
+        new UDPPort(thread, factory, network, min_port, max_port, username,
                     password, origin, emit_local_for_anyaddress);
     if (!port->Init()) {
       delete port;
@@ -127,7 +126,6 @@ class UDPPort : public Port {
   UDPPort(rtc::Thread* thread,
           rtc::PacketSocketFactory* factory,
           rtc::Network* network,
-          const rtc::IPAddress& ip,
           uint16_t min_port,
           uint16_t max_port,
           const std::string& username,
@@ -259,17 +257,14 @@ class StunPort : public UDPPort {
   static StunPort* Create(rtc::Thread* thread,
                           rtc::PacketSocketFactory* factory,
                           rtc::Network* network,
-                          const rtc::IPAddress& ip,
                           uint16_t min_port,
                           uint16_t max_port,
                           const std::string& username,
                           const std::string& password,
                           const ServerAddresses& servers,
                           const std::string& origin) {
-    StunPort* port = new StunPort(thread, factory, network,
-                                  ip, min_port, max_port,
-                                  username, password, servers,
-                                  origin);
+    StunPort* port = new StunPort(thread, factory, network, min_port, max_port,
+                                  username, password, servers, origin);
     if (!port->Init()) {
       delete port;
       port = NULL;
@@ -287,7 +282,6 @@ class StunPort : public UDPPort {
   StunPort(rtc::Thread* thread,
            rtc::PacketSocketFactory* factory,
            rtc::Network* network,
-           const rtc::IPAddress& ip,
            uint16_t min_port,
            uint16_t max_port,
            const std::string& username,
@@ -297,7 +291,6 @@ class StunPort : public UDPPort {
       : UDPPort(thread,
                 factory,
                 network,
-                ip,
                 min_port,
                 max_port,
                 username,