Return true from HeaderSearch::isFileMultipleIncludeGuarded if the file
was #import'ed.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@169761 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Index/skip-parsed-bodies/t2.cpp b/test/Index/skip-parsed-bodies/t2.cpp
index 0df28d0..93fff44 100644
--- a/test/Index/skip-parsed-bodies/t2.cpp
+++ b/test/Index/skip-parsed-bodies/t2.cpp
@@ -1,2 +1,3 @@
 #include "t.h"
 #include "pragma_once.h"
+#import "imported.h"