Unify handling of position info in AST, part 3

src/ast.cc

Index: src/ast.cc
diff --git a/src/ast.cc b/src/ast.cc
index 28c5e767d311b31790a34a4b36bf451da9a96264..818be99db104c4e350786e8d922c49106dcb7d5e 100644
--- a/src/ast.cc
+++ b/src/ast.cc
@@ -1064,9 +1064,9 @@ CaseClause::CaseClause(Isolate* isolate,
                        Expression* label,
                        ZoneList<Statement*>* statements,
                        int pos)
-    : label_(label),
+    : AstNode(pos),
+      label_(label),
       statements_(statements),
-      position_(pos),
       compare_type_(Type::None(), isolate),
       compare_id_(AstNode::GetNextId(isolate)),
       entry_id_(AstNode::GetNextId(isolate)) {
@@ -1108,6 +1108,7 @@ REGULAR_NODE(ContinueStatement)
 REGULAR_NODE(BreakStatement)
 REGULAR_NODE(ReturnStatement)
 REGULAR_NODE(SwitchStatement)
+REGULAR_NODE(CaseClause)
 REGULAR_NODE(Conditional)
 REGULAR_NODE(Literal)
 REGULAR_NODE(ArrayLiteral)