Implement name hiding for declarations deserialized from a non-visible
module. When that module becomes visible, so do those declarations.

llvm-svn: 145640
diff --git a/clang/test/Modules/auto-module-import.c b/clang/test/Modules/auto-module-import.c
index a161f33..1b5ef99 100644
--- a/clang/test/Modules/auto-module-import.c
+++ b/clang/test/Modules/auto-module-import.c
@@ -11,3 +11,4 @@
 #ifdef DEPENDS_ON_MODULE
 #  error DEPENDS_ON_MODULE should have been hidden
 #endif
+