[builtins] Introduce DeleteProperty builtin

src/compiler/js-operator.h

 // Copyright 2013 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_JS_OPERATOR_H_
 #define V8_COMPILER_JS_OPERATOR_H_
 
 #include "src/base/compiler-specific.h"
 #include "src/globals.h"
 #include "src/handles.h"
@@ skipping 644 matching lines @@
 
   const Operator* StoreProperty(LanguageMode language_mode,
                                 VectorSlotPair const& feedback);
   const Operator* StoreNamed(LanguageMode language_mode, Handle<Name> name,
                              VectorSlotPair const& feedback);
 
   const Operator* StoreNamedOwn(Handle<Name> name,
                                 VectorSlotPair const& feedback);
   const Operator* StoreDataPropertyInLiteral(const VectorSlotPair& feedback);
 
-  const Operator* DeleteProperty(LanguageMode language_mode);
+  const Operator* DeleteProperty();
 
   const Operator* HasProperty();
 
   const Operator* GetSuperConstructor();
 
   const Operator* LoadGlobal(const Handle<Name>& name,
                              const VectorSlotPair& feedback,
                              TypeofMode typeof_mode = NOT_INSIDE_TYPEOF);
   const Operator* StoreGlobal(LanguageMode language_mode,
                               const Handle<Name>& name,
@@ skipping 42 matching lines @@
   Zone* const zone_;
 
   DISALLOW_COPY_AND_ASSIGN(JSOperatorBuilder);
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_JS_OPERATOR_H_