[Interpreter] Adds support for DeleteLookupSlot to Interpreter.

src/interpreter/bytecode-array-builder.cc

Index: src/interpreter/bytecode-array-builder.cc
diff --git a/src/interpreter/bytecode-array-builder.cc b/src/interpreter/bytecode-array-builder.cc
index 06747cba830a5cd286593cdf6a90684824d30085..26d95e89206d42ae22ee69d1964dc8c7f1374561 100644
--- a/src/interpreter/bytecode-array-builder.cc
+++ b/src/interpreter/bytecode-array-builder.cc
@@ -983,6 +983,12 @@ BytecodeArrayBuilder& BytecodeArrayBuilder::Delete(Register object,
 }
 
 
+BytecodeArrayBuilder& BytecodeArrayBuilder::DeleteLookupSlot() {
+  Output(Bytecode::kDeleteLookupSlot);
+  return *this;
+}
+
+
 size_t BytecodeArrayBuilder::GetConstantPoolEntry(Handle<Object> object) {
   // These constants shouldn't be added to the constant pool, the should use
   // specialzed bytecodes instead.