Templatize AstVisitor with its subclass

src/compiler/ast-graph-builder.cc

Index: src/compiler/ast-graph-builder.cc
diff --git a/src/compiler/ast-graph-builder.cc b/src/compiler/ast-graph-builder.cc
index 1f28db16e01641951b95c6f7a68f67b7956cf30b..cdb408beeda850a0eeec22fb97e919c14c285ac5 100644
--- a/src/compiler/ast-graph-builder.cc
+++ b/src/compiler/ast-graph-builder.cc
@@ -1072,7 +1072,7 @@ void AstGraphBuilder::VisitForValues(ZoneList<Expression*>* exprs) {
 void AstGraphBuilder::VisitForValue(Expression* expr) {
   AstValueContext for_value(this);
   if (!CheckStackOverflow()) {
-    expr->Accept(this);
+    AstVisitor<AstGraphBuilder>::Visit(expr);
   } else {
     ast_context()->ProduceValue(expr, jsgraph()->UndefinedConstant());
   }
@@ -1082,7 +1082,7 @@ void AstGraphBuilder::VisitForValue(Expression* expr) {
 void AstGraphBuilder::VisitForEffect(Expression* expr) {
   AstEffectContext for_effect(this);
   if (!CheckStackOverflow()) {
-    expr->Accept(this);
+    AstVisitor<AstGraphBuilder>::Visit(expr);
   } else {
     ast_context()->ProduceValue(expr, jsgraph()->UndefinedConstant());
   }
@@ -1092,7 +1092,7 @@ void AstGraphBuilder::VisitForEffect(Expression* expr) {
 void AstGraphBuilder::VisitForTest(Expression* expr) {
   AstTestContext for_condition(this, expr->test_id());
   if (!CheckStackOverflow()) {
-    expr->Accept(this);
+    AstVisitor<AstGraphBuilder>::Visit(expr);
   } else {
     ast_context()->ProduceValue(expr, jsgraph()->UndefinedConstant());
   }
@@ -1102,7 +1102,7 @@ void AstGraphBuilder::VisitForTest(Expression* expr) {
 void AstGraphBuilder::Visit(Expression* expr) {
   // Reuses enclosing AstContext.
   if (!CheckStackOverflow()) {
-    expr->Accept(this);
+    AstVisitor<AstGraphBuilder>::Visit(expr);
   } else {
     ast_context()->ProduceValue(expr, jsgraph()->UndefinedConstant());
   }
@@ -2938,7 +2938,7 @@ void AstGraphBuilder::VisitCaseClause(CaseClause* expr) {
 
 void AstGraphBuilder::VisitDeclarations(ZoneList<Declaration*>* declarations) {
   DCHECK(globals()->empty());
-  AstVisitor::VisitDeclarations(declarations);
+  AstVisitor<AstGraphBuilder>::VisitDeclarations(declarations);
   if (globals()->empty()) return;
   int array_index = 0;
   Handle<FixedArray> data = isolate()->factory()->NewFixedArray(