[Sync] Make sync integration tests use local xmpp servers.

net/test/test_server.h

Index: net/test/test_server.h
diff --git a/net/test/test_server.h b/net/test/test_server.h
index 5c1103811be89ed79b7ec22bb761eb6fa6c779d2..00a8fc950e45b7f3c071506a586039a3931b2697 100644
--- a/net/test/test_server.h
+++ b/net/test/test_server.h
@@ -28,6 +28,7 @@
 #endif
 
 class CommandLine;
+class DictionaryValue;
 class GURL;
 
 namespace net {
@@ -116,6 +117,7 @@ class TestServer {
 
   const FilePath& document_root() const { return document_root_; }
   const HostPortPair& host_port_pair() const;
+  const DictionaryValue& server_data() const;
   std::string GetScheme() const;
   bool GetAddressList(AddressList* address_list) const WARN_UNUSED_RESULT;
 
@@ -172,6 +174,9 @@ class TestServer {
   // Address the test server listens on.
   HostPortPair host_port_pair_;
 
+  // Holds the data sent from the server (e.g., port number).
+  scoped_ptr<DictionaryValue> server_data_;
+
   // Handle of the Python process running the test server.
   base::ProcessHandle process_handle_;