Eliminate HCheckHeapObject instructions in check elimination.

src/hydrogen-check-elimination.h

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 25 matching lines @@
 
 
 // Remove CheckMaps instructions through flow- and branch-sensitive analysis.
 class HCheckEliminationPhase : public HPhase {
  public:
   explicit HCheckEliminationPhase(HGraph* graph)
     : HPhase("H_Check Elimination", graph),
       aliasing_(),
       redundant_(0),
       removed_(0),
+      removed_cho_(0),
       narrowed_(0),
       loads_(0),
       empty_(0),
       compares_true_(0),
       compares_false_(0),
       transitions_(0) { }
 
   void Run();
 
   friend class HCheckTable;
 
  private:
   void PrintStats();
 
   HAliasAnalyzer* aliasing_;
   int redundant_;
   int removed_;
+  int removed_cho_;
   int narrowed_;
   int loads_;
   int empty_;
   int compares_true_;
   int compares_false_;
   int transitions_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_HYDROGEN_CHECK_ELIMINATION_H_