Generate DataViewInitialize built-in in hydrogen.

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 2124 matching lines @@
   void HandleCompoundAssignment(Assignment* expr);
   void HandlePolymorphicLoadNamedField(BailoutId ast_id,
                                        BailoutId return_id,
                                        HValue* object,
                                        SmallMapList* types,
                                        Handle<String> name);
 
   bool IsCallNewArrayInlineable(CallNew* expr);
   void BuildInlinedCallNewArray(CallNew* expr);
 
+  void VisitDataViewInitialize(CallRuntime* expr);
+
   class PropertyAccessInfo {
    public:
     PropertyAccessInfo(Isolate* isolate, Handle<Map> map, Handle<String> name)
         : lookup_(isolate),
           map_(map),
           name_(name),
           access_(HObjectAccess::ForMap()) { }
 
     // Checkes whether this PropertyAccessInfo can be handled as a monomorphic
     // load named. It additionally fills in the fields necessary to generate the
@@ skipping 408 matching lines @@
   }
 
  private:
   HGraphBuilder* builder_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_HYDROGEN_H_