[Interpreter] Adds delete operator to interpreter.

src/interpreter/interpreter.cc

Index: src/interpreter/interpreter.cc
diff --git a/src/interpreter/interpreter.cc b/src/interpreter/interpreter.cc
index b139ab46b338f5ff7c44407c8739cf460ac32273..5d45fe3b2541670dc6f6d9e7d8c31222593e2274 100644
--- a/src/interpreter/interpreter.cc
+++ b/src/interpreter/interpreter.cc
@@ -644,6 +644,37 @@ void Interpreter::DoTypeOf(compiler::InterpreterAssembler* assembler) {
 }
 
 
+void Interpreter::DoDelete(Runtime::FunctionId function_id,
+                           compiler::InterpreterAssembler* assembler) {
+  Node* reg_index = __ BytecodeOperandReg8(0);
+  Node* object = __ LoadRegister(reg_index);
+  Node* key = __ GetAccumulator();
+  Node* result = __ CallRuntime(function_id, object, key);
+  __ SetAccumulator(result);
+  __ Dispatch();
+}
+
+
+// DeletePropertyStrict
+//
+// Delete the property specified in the accumulator from the object
+// referenced by the register operand following strict mode semantics.
+void Interpreter::DoDeletePropertyStrict(
+    compiler::InterpreterAssembler* assembler) {
+  DoDelete(Runtime::kDeleteProperty_Strict, assembler);
+}
+
+
+// DeletePropertySloppy
+//
+// Delete the property specified in the accumulator from the object
+// referenced by the register operand following sloppy mode semantics.
+void Interpreter::DoDeletePropertySloppy(
+    compiler::InterpreterAssembler* assembler) {
+  DoDelete(Runtime::kDeleteProperty_Sloppy, assembler);
+}
+
+
 // Call <callable> <receiver> <arg_count>
 //
 // Call a JSfunction or Callable in |callable| with the |receiver| and