Change @import to @__experimental_modules_import.  We are not ready to commit to a particular syntax for modules,
and don't have time to push it forward in the near future.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@151841 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Modules/on-demand-build-warnings.m b/test/Modules/on-demand-build-warnings.m
index 7116f01..24975c0 100644
--- a/test/Modules/on-demand-build-warnings.m
+++ b/test/Modules/on-demand-build-warnings.m
@@ -1,5 +1,5 @@
 // RUN: rm -rf %t
 // RUN: %clang_cc1 -fmodules -fno-objc-infer-related-result-type -Wmodule-build -fmodule-cache-path %t -F %S/Inputs -verify %s
 
-@import Module; // expected-warning{{building module 'Module' from source}}
+@__experimental_modules_import Module; // expected-warning{{building module 'Module' from source}}