Don't require Foundation to bridge 'id' to 'Any'.

It should be possible to make this bridging machinery live in the core runtime, and requiring Foundation for it creates a layering problem for the ObjectiveC module.

Author: jckarter

lib/ClangImporter/ImportType.cpp

@@ -1213,9 +1213,13 @@ static Type adjustTypeForConcreteImport(ClangImporter::Implementation &impl,
 
   // If we have a bridged Objective-C type and we are allowed to
   // bridge, do so.
-  if (hint == ImportHint::ObjCBridged && canBridgeTypes(importKind) &&
-      (impl.tryLoadFoundationModule() || impl.ImportForwardDeclarations))
-    importedType = hint.BridgedType;
+  if (hint == ImportHint::ObjCBridged && canBridgeTypes(importKind))
+    // id and Any can be bridged without Foundation. There would be
+    // bootstrapping issues with the ObjectiveC module otherwise.
+    if (hint.BridgedType->isAny()
+        || impl.tryLoadFoundationModule()
+        || impl.ImportForwardDeclarations)
+      importedType = hint.BridgedType;
 
   if (!importedType)
     return importedType;