[base] Remove PointersMatch, making a separate std::equals hashmap

src/compiler/state-values-utils.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_STATE_VALUES_UTILS_H_
 #define V8_COMPILER_STATE_VALUES_UTILS_H_
 
 #include "src/compiler/js-graph.h"
 
 namespace v8 {
@@ skipping 37 matching lines @@
   NodeVector* GetWorkingSpace(size_t level);
   Node* GetEmptyStateValues();
   Node* GetValuesNodeFromCache(Node** nodes, size_t count);
 
   Graph* graph() { return js_graph_->graph(); }
   CommonOperatorBuilder* common() { return js_graph_->common(); }
 
   Zone* zone() { return graph()->zone(); }
 
   JSGraph* js_graph_;
-  ZoneHashMap hash_map_;
+  CustomMatcherZoneHashMap hash_map_;
   ZoneVector<NodeVector*> working_space_;  // One working space per level.
   Node* empty_state_values_;
 };
 
 class StateValuesAccess {
  public:
   struct TypedNode {
     Node* node;
     MachineType type;
     TypedNode(Node* node, MachineType type) : node(node), type(type) {}
@@ skipping 42 matching lines @@
 
  private:
   Node* node_;
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_STATE_VALUES_UTILS_H_