Support more implicit conversions for Objective-C types. Addresses <rdar://problem/6458293>.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@61255 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/Sema.h b/lib/Sema/Sema.h
index 1fac775..56b681c 100644
--- a/lib/Sema/Sema.h
+++ b/lib/Sema/Sema.h
@@ -383,6 +383,8 @@
   bool IsFloatingPointPromotion(QualType FromType, QualType ToType);
   bool IsPointerConversion(Expr *From, QualType FromType, QualType ToType,
                            QualType& ConvertedType, bool &IncompatibleObjC);
+  bool isObjCPointerConversion(QualType FromType, QualType ToType,
+                               QualType& ConvertedType, bool &IncompatibleObjC);
   bool CheckPointerConversion(Expr *From, QualType ToType);
   bool IsQualificationConversion(QualType FromType, QualType ToType);
   bool IsUserDefinedConversion(Expr *From, QualType ToType,