Remove get(V)BaseClassOffsetInBits, the CharUnit functions should be used instead.

No functionality change.

llvm-svn: 159719
diff --git a/clang/lib/CodeGen/CGCXX.cpp b/clang/lib/CodeGen/CGCXX.cpp
index 18e2a16..003fef5 100644
--- a/clang/lib/CodeGen/CGCXX.cpp
+++ b/clang/lib/CodeGen/CGCXX.cpp
@@ -91,7 +91,7 @@
 
   // If the base is at a non-zero offset, give up.
   const ASTRecordLayout &ClassLayout = Context.getASTRecordLayout(Class);
-  if (ClassLayout.getBaseClassOffsetInBits(UniqueBase) != 0)
+  if (!ClassLayout.getBaseClassOffset(UniqueBase).isZero())
     return true;
 
   return TryEmitDefinitionAsAlias(GlobalDecl(D, Dtor_Base),