Support specifying the GSSAPI library that will be used.

net/http/http_auth_handler_factory.h

Index: net/http/http_auth_handler_factory.h
diff --git a/net/http/http_auth_handler_factory.h b/net/http/http_auth_handler_factory.h
index da6bad83c68b54468ec10d2cf091738aaa8d6f7f..be1ca4f72d10801c99a953d769f99c3a71865ab5 100644
--- a/net/http/http_auth_handler_factory.h
+++ b/net/http/http_auth_handler_factory.h
@@ -174,12 +174,16 @@ class HttpAuthHandlerRegistryFactory : public HttpAuthHandlerFactory {
   // scheme is used and |negotiate_disable_cname_lookup| is false,
   // |host_resolver| must not be NULL.
   //
+  // |gssapi_library_name| specifies the name of the GSSAPI library that will
+  // be loaded. This parameter is disregarded on Windows.
+  //
   // |negotiate_disable_cname_lookup| and |negotiate_enable_port| both control
   // how Negotiate does SPN generation, by default these should be false.
   static HttpAuthHandlerRegistryFactory* Create(
       const std::vector<std::string>& supported_schemes,
       URLSecurityManager* security_manager,
       HostResolver* host_resolver,
+      const std::string& gssapi_library_name,
       bool negotiate_disable_cname_lookup,
       bool negotiate_enable_port);