[turbofan] Reuse forward fixpoint algorithm in Typer by making it a Reducer.

src/compiler/node-properties.h

 // Copyright 2013 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_NODE_PROPERTIES_H_
 #define V8_COMPILER_NODE_PROPERTIES_H_
 
 #include "src/compiler/node.h"
 #include "src/types.h"
 
@@ skipping 25 matching lines @@
   static inline void ReplaceEffectInput(Node* node, Node* effect,
                                         int index = 0);
   static inline void ReplaceFrameStateInput(Node* node, Node* frame_state);
   static inline void RemoveNonValueInputs(Node* node);
   static inline void ReplaceWithValue(Node* node, Node* value,
                                       Node* effect = NULL);
 
   static inline bool IsTyped(Node* node);
   static inline Bounds GetBounds(Node* node);
   static inline void SetBounds(Node* node, Bounds bounds);
+  static inline void RemoveBounds(Node* node);
   static inline bool AllValueInputsAreTyped(Node* node);
 
   static inline int FirstValueIndex(Node* node);
   static inline int FirstContextIndex(Node* node);
   static inline int FirstFrameStateIndex(Node* node);
   static inline int FirstEffectIndex(Node* node);
   static inline int FirstControlIndex(Node* node);
   static inline int PastValueIndex(Node* node);
   static inline int PastContextIndex(Node* node);
   static inline int PastFrameStateIndex(Node* node);
   static inline int PastEffectIndex(Node* node);
   static inline int PastControlIndex(Node* node);
 
   static inline bool IsInputRange(Edge edge, int first, int count);
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_NODE_PROPERTIES_H_