Revert of [debugger] remove debugger statement support from FCG/CS.

src/ast/ast.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_AST_AST_H_
 #define V8_AST_AST_H_
 
 #include "src/ast/ast-types.h"
 #include "src/ast/ast-value-factory.h"
 #include "src/ast/modules.h"
@@ skipping 1128 matching lines @@
 
   TryFinallyStatement(Block* try_block, Block* finally_block, int pos)
       : TryStatement(try_block, pos, kTryFinallyStatement),
         finally_block_(finally_block) {}
 
   Block* finally_block_;
 };
 
 
 class DebuggerStatement final : public Statement {
+ public:
+  void set_base_id(int id) { base_id_ = id; }
+  static int num_ids() { return parent_num_ids() + 1; }
+  BailoutId DebugBreakId() const { return BailoutId(local_id(0)); }
+
  private:
   friend class AstNodeFactory;
 
-  explicit DebuggerStatement(int pos) : Statement(pos, kDebuggerStatement) {}
+  explicit DebuggerStatement(int pos)
+      : Statement(pos, kDebuggerStatement),
+        base_id_(BailoutId::None().ToInt()) {}
+
+  static int parent_num_ids() { return 0; }
+  int base_id() const {
+    DCHECK(!BailoutId(base_id_).IsNone());
+    return base_id_;
+  }
+  int local_id(int n) const { return base_id() + parent_num_ids() + n; }
+
+  int base_id_;
 };
 
 
 class EmptyStatement final : public Statement {
  private:
   friend class AstNodeFactory;
   explicit EmptyStatement(int pos) : Statement(pos, kEmptyStatement) {}
 };
 
 
@@ skipping 2460 matching lines @@
                                     : NULL;                                   \
   }
 AST_NODE_LIST(DECLARE_NODE_FUNCTIONS)
 #undef DECLARE_NODE_FUNCTIONS
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_AST_AST_H_