Add constants for FrameState input parameters

src/compiler/frame-states.h

 // Copyright 2015 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_COMPILER_FRAME_STATES_H_
 #define V8_COMPILER_FRAME_STATES_H_
 
 #include "src/utils.h"
 
 namespace v8 {
@@ skipping 83 matching lines @@
   OutputFrameStateCombine const frame_state_combine_;
 };
 
 bool operator==(FrameStateCallInfo const&, FrameStateCallInfo const&);
 bool operator!=(FrameStateCallInfo const&, FrameStateCallInfo const&);
 
 size_t hash_value(FrameStateCallInfo const&);
 
 std::ostream& operator<<(std::ostream&, FrameStateCallInfo const&);
 
+static const int kFrameStateParametersInput = 0;
+static const int kFrameStateLocalsInput = 1;
+static const int kFrameStateStackInput = 2;
+static const int kFrameStateContextInput = 3;
+static const int kFrameStateFunctionInput = 4;
+static const int kFrameStateOuterStateInput = 5;
+static const int kFrameStateInputCount = kFrameStateOuterStateInput + 1;
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_FRAME_STATES_H_