Rename SymbolID to SymbolRef.  This is a precursor to some overhauling of the representation of symbolic values.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60575 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/GRSimpleVals.cpp b/lib/Analysis/GRSimpleVals.cpp
index 783bccc..c1f455b 100644
--- a/lib/Analysis/GRSimpleVals.cpp
+++ b/lib/Analysis/GRSimpleVals.cpp
@@ -415,7 +415,7 @@
   QualType T = CE->getType();  
   if (Loc::IsLocType(T) || (T->isIntegerType() && T->isScalarType())) {    
     unsigned Count = Builder.getCurrentBlockCount();
-    SymbolID Sym = Eng.getSymbolManager().getConjuredSymbol(CE, Count);
+    SymbolRef Sym = Eng.getSymbolManager().getConjuredSymbol(CE, Count);
         
     SVal X = Loc::IsLocType(CE->getType())
              ? cast<SVal>(loc::SymbolVal(Sym))