Reland of Adding the ability to change ICE servers through SetConfiguration.

webrtc/p2p/client/fakeportallocator.h

Index: webrtc/p2p/client/fakeportallocator.h
diff --git a/webrtc/p2p/client/fakeportallocator.h b/webrtc/p2p/client/fakeportallocator.h
index dca86f633e7c39664cd82a17a2823132791c400a..d59333a97d21f84b160aaf79d332364ff14fc6f1 100644
--- a/webrtc/p2p/client/fakeportallocator.h
+++ b/webrtc/p2p/client/fakeportallocator.h
@@ -101,11 +101,24 @@ class FakePortAllocator : public cricket::PortAllocator {
     }
   }
 
+  void SetIceServers(
+      const ServerAddresses& stun_servers,
+      const std::vector<RelayServerConfig>& turn_servers) override {
+    stun_servers_ = stun_servers;
+    turn_servers_ = turn_servers;
+  }
+
+  const ServerAddresses& stun_servers() const { return stun_servers_; }
+
+  const std::vector<RelayServerConfig>& turn_servers() const {
+    return turn_servers_;
+  }
+
   virtual cricket::PortAllocatorSession* CreateSessionInternal(
       const std::string& content_name,
       int component,
       const std::string& ice_ufrag,
-      const std::string& ice_pwd) {
+      const std::string& ice_pwd) override {
     return new FakePortAllocatorSession(
         worker_thread_, factory_, content_name, component, ice_ufrag, ice_pwd);
   }
@@ -114,6 +127,8 @@ class FakePortAllocator : public cricket::PortAllocator {
   rtc::Thread* worker_thread_;
   rtc::PacketSocketFactory* factory_;
   rtc::scoped_ptr<rtc::BasicPacketSocketFactory> owned_factory_;
+  ServerAddresses stun_servers_;
+  std::vector<RelayServerConfig> turn_servers_;
 };
 
 }  // namespace cricket