reland: Launch pywebsocket via net::TestServer

net/test/base_test_server.h

Index: net/test/base_test_server.h
diff --git a/net/test/base_test_server.h b/net/test/base_test_server.h
index 173abf7542537ca6c31f29c1d4fa06acb2d25adf..9f1290ebf17401b04271bc4156361fc4982bc67b 100644
--- a/net/test/base_test_server.h
+++ b/net/test/base_test_server.h
@@ -30,6 +30,8 @@ class BaseTestServer {
  public:
   typedef std::pair<std::string, std::string> StringPair;
 
+  // Following types represent protocol schemes. See also
+  // http://www.iana.org/assignments/uri-schemes.html
   enum Type {
     TYPE_BASIC_AUTH_PROXY,
     TYPE_FTP,
@@ -180,6 +182,11 @@ class BaseTestServer {
       const std::vector<StringPair>& text_to_replace,
       std::string* replacement_path);
 
+  static bool UsingSSL(Type type) {
+    return type == BaseTestServer::TYPE_HTTPS ||
+           type == BaseTestServer::TYPE_WSS;
+  }
+
  protected:
   virtual ~BaseTestServer();
   Type type() const { return type_; }