Revert of Removing HTTPS and SOCKS proxy server code.

webrtc/p2p/base/relayport.cc

Index: webrtc/p2p/base/relayport.cc
diff --git a/webrtc/p2p/base/relayport.cc b/webrtc/p2p/base/relayport.cc
index 3d56c4acb437f09fa075e8047740f69314a8af3b..2ab71dc3e4e5664bb47a04a81f5d79494d4da3c5 100644
--- a/webrtc/p2p/base/relayport.cc
+++ b/webrtc/p2p/base/relayport.cc
@@ -210,7 +210,15 @@ RelayPort::~RelayPort() {
 }
 
 void RelayPort::AddServerAddress(const ProtocolAddress& addr) {
-  server_addr_.push_back(addr);
+  // Since HTTP proxies usually only allow 443,
+  // let's up the priority on PROTO_SSLTCP
+  if (addr.proto == PROTO_SSLTCP &&
+      (proxy().type == rtc::PROXY_HTTPS ||
+       proxy().type == rtc::PROXY_UNKNOWN)) {
+    server_addr_.push_front(addr);
+  } else {
+    server_addr_.push_back(addr);
+  }
 }
 
 void RelayPort::AddExternalAddress(const ProtocolAddress& addr) {