Revert 13157, 13145 and 13140: Crankshaft code stubs.

src/ast.cc

Index: src/ast.cc
diff --git a/src/ast.cc b/src/ast.cc
index c43b9138bb8c81c7fc1e4a7bdb9c8be6fae18e68..232cb739a1db52769d3ea182658c821ac105033c 100644
--- a/src/ast.cc
+++ b/src/ast.cc
@@ -616,6 +616,14 @@ void ObjectLiteral::Property::RecordTypeFeedback(TypeFeedbackOracle* oracle) {
 // ----------------------------------------------------------------------------
 // Implementation of AstVisitor
 
+bool AstVisitor::CheckStackOverflow() {
+  if (stack_overflow_) return true;
+  StackLimitCheck check(isolate_);
+  if (!check.HasOverflowed()) return false;
+  return (stack_overflow_ = true);
+}
+
+
 void AstVisitor::VisitDeclarations(ZoneList<Declaration*>* declarations) {
   for (int i = 0; i < declarations->length(); i++) {
     Visit(declarations->at(i));