[interpreter] Reduce dependencies in bytecodes.{h,cc}

src/interpreter/bytecode-flags.h

Index: src/interpreter/bytecode-flags.h
diff --git a/src/interpreter/bytecode-flags.h b/src/interpreter/bytecode-flags.h
new file mode 100644
index 0000000000000000000000000000000000000000..1068d8a9d9c39b5daf83c712f5b08cb793532455
--- /dev/null
+++ b/src/interpreter/bytecode-flags.h
@@ -0,0 +1,42 @@
+// 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_FLAGS_H_
+#define V8_INTERPRETER_BYTECODE_FLAGS_H_
+
+#include "src/utils.h"
+
+namespace v8 {
+namespace internal {
+namespace interpreter {
+
+class CreateObjectLiteralFlags {
+ public:
+  class FlagsBits : public BitField8<int, 0, 3> {};
+  class FastClonePropertiesCountBits
+      : public BitField8<int, FlagsBits::kNext, 3> {};
+
+  static uint8_t Encode(bool fast_clone_supported, int properties_count,
+                        int runtime_flags);
+
+ private:
+  DISALLOW_IMPLICIT_CONSTRUCTORS(CreateObjectLiteralFlags);
+};
+
+class CreateClosureFlags {
+ public:
+  class PretenuredBit : public BitField8<bool, 0, 1> {};
+  class FastNewClosureBit : public BitField8<bool, PretenuredBit::kNext, 1> {};
+
+  static uint8_t Encode(bool pretenure, bool is_function_scope);
+
+ private:
+  DISALLOW_IMPLICIT_CONSTRUCTORS(CreateClosureFlags);
+};
+
+}  // namespace interpreter
+}  // namespace internal
+}  // namespace v8
+
+#endif  // V8_INTERPRETER_BYTECODE_FLAGS_H_