Templatize AstVisitor with its subclass

src/compiler/ast-graph-builder.h

Index: src/compiler/ast-graph-builder.h
diff --git a/src/compiler/ast-graph-builder.h b/src/compiler/ast-graph-builder.h
index c916e7940f0d7fb4fe6924a772012963cd40d04a..852e25a26a05ff470a4a8fa2f6eb04687577535d 100644
--- a/src/compiler/ast-graph-builder.h
+++ b/src/compiler/ast-graph-builder.h
@@ -32,11 +32,12 @@ class TypeHintAnalysis;
 // underlying AST. The produced graph can either be compiled into a
 // stand-alone function or be wired into another graph for the purposes
 // of function inlining.
-class AstGraphBuilder : public AstVisitor {
+class AstGraphBuilder : public AstVisitor<AstGraphBuilder> {

[Igor Sheludko, 2016/07/14 16:39:54]

Same comment as in HOptimizedGraphBuilder is requested.

[Toon Verwaest, 2016/07/15 07:07:20]

Done.

  public:
   AstGraphBuilder(Zone* local_zone, CompilationInfo* info, JSGraph* jsgraph,
                   LoopAssignmentAnalysis* loop_assignment = nullptr,
                   TypeHintAnalysis* type_hint_analysis = nullptr);
+  virtual ~AstGraphBuilder() {}
 
   // Creates a graph by visiting the entire AST.
   bool CreateGraph(bool stack_check = true);
@@ -51,13 +52,13 @@ class AstGraphBuilder : public AstVisitor {
   }
 
  protected:
-#define DECLARE_VISIT(type) void Visit##type(type* node) override;
+#define DECLARE_VISIT(type) virtual void Visit##type(type* node);
   // Visiting functions for AST nodes make this an AstVisitor.
   AST_NODE_LIST(DECLARE_VISIT)
 #undef DECLARE_VISIT
 
   // Visiting function for declarations list is overridden.
-  void VisitDeclarations(ZoneList<Declaration*>* declarations) override;
+  void VisitDeclarations(ZoneList<Declaration*>* declarations);
 
  private:
   class AstContext;