Add "run_testserver --sync-test" for easy chromiumsync_test.py launching.

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 6e5eb606bd51b2e011f42f982c6be92b31eb5beb..a656d0e1ab7b1ab9cc178cfa2551c52b504d2c29 100644
--- a/net/test/test_server.h
+++ b/net/test/test_server.h
@@ -147,12 +147,15 @@ class TestServer {
       const std::vector<StringPair>& text_to_replace,
       std::string* replacement_path);
 
+  // Modify PYTHONPATH to contain libraries we need.
+  static bool SetPythonPath() WARN_UNUSED_RESULT;
+
+  // Return the path containing testserver python script.
+  static FilePath GetTestServerDirectory();
+
  private:
   void Init(const std::string& host, const FilePath& document_root);
 
-  // Modify PYTHONPATH to contain libraries we need.
-  bool SetPythonPath() WARN_UNUSED_RESULT;
-
   // Launches the Python test server. Returns true on success.
   bool LaunchPython(const FilePath& testserver_path) WARN_UNUSED_RESULT;