[turbofan] Restrict types in load elimination.

src/compiler/load-elimination.h

 // Copyright 2014 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_LOAD_ELIMINATION_H_
 #define V8_COMPILER_LOAD_ELIMINATION_H_
 
 #include "src/compiler/graph-reducer.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
+class CommonOperatorBuilder;
+class Graph;
+class JSGraph;

[Benedikt Meurer, 2016/04/05 12:01:41]

Nit: JSGraph seems unused.

[Jarin, 2016/04/05 12:06:38]

Done.

+
 class LoadElimination final : public AdvancedReducer {
  public:
-  explicit LoadElimination(Editor* editor) : AdvancedReducer(editor) {}
+  explicit LoadElimination(Editor* editor, Graph* graph,
+                           CommonOperatorBuilder* common)
+      : AdvancedReducer(editor), graph_(graph), common_(common) {}
   ~LoadElimination() final;
 
   Reduction Reduce(Node* node) final;
 
  private:
+  CommonOperatorBuilder* common() const { return common_; }
+  Graph* graph() { return graph_; }
+
   Reduction ReduceLoadField(Node* node);
+  Graph* graph_;
+  CommonOperatorBuilder* common_;
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_LOAD_ELIMINATION_H_