[strong] Refactor ObjectStrength into a replacement for strong boolean args

src/hydrogen.h

 // Copyright 2012 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_HYDROGEN_H_
 #define V8_HYDROGEN_H_
 
 #include "src/v8.h"
 
 #include "src/accessors.h"
@@ skipping 1411 matching lines @@
   HLoadNamedField* AddLoadMap(HValue* object,
                               HValue* dependency = NULL);
   HLoadNamedField* AddLoadElements(HValue* object,
                                    HValue* dependency = NULL);
 
   bool MatchRotateRight(HValue* left,
                         HValue* right,
                         HValue** operand,
                         HValue** shift_amount);
 
-  HValue* BuildBinaryOperation(Token::Value op,
-                               HValue* left,
-                               HValue* right,
-                               Type* left_type,
-                               Type* right_type,
-                               Type* result_type,
-                               Maybe<int> fixed_right_arg,
+  HValue* BuildBinaryOperation(Token::Value op, HValue* left, HValue* right,
+                               Type* left_type, Type* right_type,
+                               Type* result_type, Maybe<int> fixed_right_arg,
                                HAllocationMode allocation_mode,
-                               LanguageMode language_mode);
+                               Strength strength);
 
   HLoadNamedField* AddLoadFixedArrayLength(HValue *object,
                                            HValue *dependency = NULL);
 
   HLoadNamedField* AddLoadArrayLength(HValue *object,
                                       ElementsKind kind,
                                       HValue *dependency = NULL);
 
   HValue* AddLoadJSBuiltin(Builtins::JavaScript builtin);
 
@@ skipping 1596 matching lines @@
   }
 
  private:
   HGraphBuilder* builder_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_HYDROGEN_H_