rename isReferenceType to follow the new scheme.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@40640 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/AST/Type.cpp b/AST/Type.cpp
index ae04c4e..1c61c68 100644
--- a/AST/Type.cpp
+++ b/AST/Type.cpp
@@ -70,6 +70,7 @@
 
 // FIXME: move inline
 bool Type::isPointerType() const { return isa<PointerType>(CanonicalType); }
+bool Type::isReferenceType() const { return isa<ReferenceType>(CanonicalType); }
 
 const PointerType *Type::getAsPointerType() const {
   // If this is directly a pointer type, return it.
@@ -83,7 +84,7 @@
   return 0;
 }
 
-const ReferenceType *Type::isReferenceType() const {
+const ReferenceType *Type::getAsReferenceType() const {
   // If this is directly a reference type, return it.
   if (const ReferenceType *RTy = dyn_cast<ReferenceType>(this))
     return RTy;