[ignition] Rewrite reverse iterator as random iterator

src/interpreter/bytecode-array-reverse-iterator.h

-// Copyright 2016 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_INTERPRETER_BYTECODE_ARRAY_REVERSE_ITERATOR_H_
-#define V8_INTERPRETER_BYTECODE_ARRAY_REVERSE_ITERATOR_H_
-
-#include "src/interpreter/bytecode-array-accessor.h"
-#include "src/zone/zone-containers.h"
-#include "src/zone/zone.h"
-
-namespace v8 {
-namespace internal {
-namespace interpreter {
-
-class V8_EXPORT_PRIVATE BytecodeArrayReverseIterator final
-    : public BytecodeArrayAccessor {
- public:
-  explicit BytecodeArrayReverseIterator(Handle<BytecodeArray> bytecode_array,
-                                        Zone* zone);
-
-  void Advance();
-  void Reset();
-  bool done() const;
-
- private:
-  ZoneVector<int> offsets_;
-  ZoneVector<int>::const_reverse_iterator it_offsets_;
-
-  void UpdateOffsetFromIterator();
-
-  DISALLOW_COPY_AND_ASSIGN(BytecodeArrayReverseIterator);
-};
-
-}  // namespace interpreter
-}  // namespace internal
-}  // namespace v8
-
-#endif  // V8_INTERPRETER_BYTECODE_ARRAY_REVERSE_ITERATOR_H_