Restore translating C++ methods only in cxx experimental mode

Reviewed By: ddino

Differential Revision: D3048117

fb-gh-sync-id: bf12437
shipit-source-id: bf12437

Author: dulmarod

infer/src/clang/cFrontend_decl.ml

@@ -169,7 +169,7 @@ struct
             | Some (ClassTemplateSpecializationDecl _ as d) ->
                 let class_name = CTypes_decl.get_record_name d in
                 let curr_class = CContext.ContextCls(class_name, None, []) in
-                if !CFrontend_config.testing_mode then
+                if !CFrontend_config.cxx_experimental then
                   process_methods tenv cg cfg curr_class [dec]
           | Some dec -> Printing.log_stats "Methods of %s skipped\n" (Ast_utils.string_of_decl dec)
           | None -> ())