Addressed perf regression in Browsermark2.0 array blur test

src/hydrogen.h

 // Copyright 2012 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 2342 matching lines @@
                                            Handle<Map> map);
   HInstruction* BuildStoreKeyedGeneric(HValue* object,
                                        HValue* key,
                                        HValue* value);
 
   HValue* BuildContextChainWalk(Variable* var);
 
   HInstruction* BuildThisFunction();
 
   HInstruction* BuildFastLiteral(Handle<JSObject> boilerplate_object,
-                                 AllocationSiteContext* site_context);
+                                 AllocationSiteUsageContext* site_context);
 
   void BuildEmitObjectHeader(Handle<JSObject> boilerplate_object,
                              HInstruction* object);
 
   void BuildInitElementsInObjectHeader(Handle<JSObject> boilerplate_object,
                                        HInstruction* object,
                                        HInstruction* object_elements);
 
   void BuildEmitInObjectProperties(Handle<JSObject> boilerplate_object,
                                    HInstruction* object,
-                                   AllocationSiteContext* site_context);
+                                   AllocationSiteUsageContext* site_context);
 
   void BuildEmitElements(Handle<JSObject> boilerplate_object,
                          Handle<FixedArrayBase> elements,
                          HValue* object_elements,
-                         AllocationSiteContext* site_context);
+                         AllocationSiteUsageContext* site_context);
 
   void BuildEmitFixedDoubleArray(Handle<FixedArrayBase> elements,
                                  ElementsKind kind,
                                  HValue* object_elements);
 
   void BuildEmitFixedArray(Handle<FixedArrayBase> elements,
                            ElementsKind kind,
                            HValue* object_elements,
-                           AllocationSiteContext* site_context);
+                           AllocationSiteUsageContext* site_context);
 
   void AddCheckPrototypeMaps(Handle<JSObject> holder,
                              Handle<Map> receiver_map);
 
   void AddCheckConstantFunction(Handle<JSObject> holder,
                                 HValue* receiver,
                                 Handle<Map> receiver_map);
 
   // The translation state of the currently-being-translated function.
   FunctionState* function_state_;
@@ skipping 179 matching lines @@
   }
 
  private:
   HGraphBuilder* builder_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_HYDROGEN_H_