[Interpreter] Adds delete operator to interpreter.

test/unittests/interpreter/bytecode-array-builder-unittest.cc

Index: test/unittests/interpreter/bytecode-array-builder-unittest.cc
diff --git a/test/unittests/interpreter/bytecode-array-builder-unittest.cc b/test/unittests/interpreter/bytecode-array-builder-unittest.cc
index e1cda3d121f130911800b8a490ccd4ab2ad2fadd..629e4bc135e0881cc29bce59dace4d800d6e8528 100644
--- a/test/unittests/interpreter/bytecode-array-builder-unittest.cc
+++ b/test/unittests/interpreter/bytecode-array-builder-unittest.cc
@@ -105,6 +105,8 @@ TEST_F(BytecodeArrayBuilderTest, AllBytecodesGenerated) {
   // Emit unary operator invocations.
   builder.LogicalNot().TypeOf();
 
+  // Emit delete
+  builder.Delete(reg, LanguageMode::SLOPPY).Delete(reg, LanguageMode::STRICT);
 
   // Emit new.
   builder.New(reg, reg, 0);