Extern the ASTImporter to import @implementation declarations.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@121097 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/ASTMerge/Inputs/interface1.m b/test/ASTMerge/Inputs/interface1.m
index 7e9935d..5865c0e 100644
--- a/test/ASTMerge/Inputs/interface1.m
+++ b/test/ASTMerge/Inputs/interface1.m
@@ -79,3 +79,25 @@
 @protocol P4
 - (double)honk:(int)a;
 @end
+
+// Interface with implementation
+@interface I13
+@end
+
+@implementation I13
+@end
+
+@interface I13a
+@end
+
+@implementation I13a
+@end
+
+// Implementation by itself
+@implementation I14 : I12
+@end
+
+@implementation I15 : I12
+@end
+
+