[Interpreter] Adds support for DeleteLookupSlot to Interpreter.

src/interpreter/interpreter.cc

Index: src/interpreter/interpreter.cc
diff --git a/src/interpreter/interpreter.cc b/src/interpreter/interpreter.cc
index 74c23bb91a9f106b7d2269ed464eb70b66edfd3f..13bf676f1d85407b0f98f36c2da7ce3e72386a50 100644
--- a/src/interpreter/interpreter.cc
+++ b/src/interpreter/interpreter.cc
@@ -963,6 +963,20 @@ void Interpreter::DoDeletePropertySloppy(
 }
 
 
+// DeleteLookupSlot
+//
+// Delete the variable with the name specified in the accumulator by dynamically
+// looking it up.
+void Interpreter::DoDeleteLookupSlot(
+    compiler::InterpreterAssembler* assembler) {
+  Node* name = __ GetAccumulator();
+  Node* context = __ GetContext();
+  Node* result = __ CallRuntime(Runtime::kDeleteLookupSlot, context, name);
+  __ SetAccumulator(result);
+  __ Dispatch();
+}
+
+
 void Interpreter::DoJSCall(compiler::InterpreterAssembler* assembler) {
   Node* function_reg = __ BytecodeOperandReg(0);
   Node* function = __ LoadRegister(function_reg);