Remove SVal::MakeZero and replace it with ValueManager::makeZeroVal.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@68711 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/SVals.cpp b/lib/Analysis/SVals.cpp
index b78eea7..8fdc37f 100644
--- a/lib/Analysis/SVals.cpp
+++ b/lib/Analysis/SVals.cpp
@@ -205,7 +205,7 @@
 // Utility methods for constructing SVals.
 //===----------------------------------------------------------------------===//
 
-SVal SVal::MakeZero(BasicValueFactory &BasicVals, QualType T) {
+SVal ValueManager::makeZeroVal(QualType T) {
   if (Loc::IsLocType(T))
     return Loc::MakeNull(BasicVals);