[Interpreter] Adds support for DeleteLookupSlot to Interpreter.

src/interpreter/bytecode-array-builder.h

 // Copyright 2015 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_INTERPRETER_BYTECODE_ARRAY_BUILDER_H_
 #define V8_INTERPRETER_BYTECODE_ARRAY_BUILDER_H_
 
 #include <vector>
 
 #include "src/ast/ast.h"
@@ skipping 168 matching lines @@
   // Count Operators (value stored in accumulator).
   BytecodeArrayBuilder& CountOperation(Token::Value op, Strength strength);
 
   // Unary Operators.
   BytecodeArrayBuilder& LogicalNot();
   BytecodeArrayBuilder& TypeOf();
 
   // Deletes property from an object. This expects that accumulator contains
   // the key to be deleted and the register contains a reference to the object.
   BytecodeArrayBuilder& Delete(Register object, LanguageMode language_mode);
+  BytecodeArrayBuilder& DeleteLookupSlot();
 
   // Tests.
   BytecodeArrayBuilder& CompareOperation(Token::Value op, Register reg,
                                          Strength strength);
 
   // Casts.
   BytecodeArrayBuilder& CastAccumulatorToBoolean();
   BytecodeArrayBuilder& CastAccumulatorToJSObject();
   BytecodeArrayBuilder& CastAccumulatorToName();
   BytecodeArrayBuilder& CastAccumulatorToNumber();
@@ skipping 174 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(TemporaryRegisterScope);
 };
 
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_INTERPRETER_BYTECODE_ARRAY_BUILDER_H_