Simplify handling of stack overflows in AstGraphBuilder.

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 4bf06d820f01bfa78165df90e6b4d628c08d7874..515283fc8a48fabde62cce0b7959e3e1552b98fa 100644
--- a/src/compiler/ast-graph-builder.h
+++ b/src/compiler/ast-graph-builder.h
@@ -77,8 +77,6 @@ class AstGraphBuilder : public AstVisitor {
   Environment* environment_;
   AstContext* ast_context_;
 
-  bool CreateGraphBody();
-
   // List of global declarations for functions and variables.
   ZoneVector<Handle<Object>> globals_;
 
@@ -129,6 +127,8 @@ class AstGraphBuilder : public AstVisitor {
   void set_execution_context(ContextScope* ctx) { execution_context_ = ctx; }
   void set_exit_control(Node* exit) { exit_control_ = exit; }
 
+  void CreateGraphBody();
+
   // Node creation helpers.
   Node* NewNode(const Operator* op, bool incomplete = false) {
     return MakeNode(op, 0, static_cast<Node**>(NULL), incomplete);