[Interpreter] Support for operator new.

test/cctest/interpreter/test-interpreter.cc

Index: test/cctest/interpreter/test-interpreter.cc
diff --git a/test/cctest/interpreter/test-interpreter.cc b/test/cctest/interpreter/test-interpreter.cc
index 188b3e61d99c5f8aef53684ba6eeff20819e06ac..d48ebadb6c1292d280d670e8c79d970d493f48f5 100644
--- a/test/cctest/interpreter/test-interpreter.cc
+++ b/test/cctest/interpreter/test-interpreter.cc
@@ -1637,3 +1637,41 @@ TEST(InterpreterFunctionLiteral) {
       Handle<Smi>(Smi::FromInt(3), handles.main_isolate())).ToHandleChecked();
   CHECK_EQ(Smi::cast(*return_val), Smi::FromInt(5));
 }
+
+
+TEST(InterpreterConstruct) {
+  HandleAndZoneScope handles;
+
+  std::string source(
+      "function counter() { this.count = 0; }\n"
+      "function " +
+      InterpreterTester::function_name() +
+      "() {\n"
+      "  var c = new counter();\n"
+      "  return c.count;\n"
+      "}");
+  InterpreterTester tester(handles.main_isolate(), source.c_str());
+  auto callable = tester.GetCallable<>();
+
+  Handle<Object> return_val = callable().ToHandleChecked();
+  CHECK_EQ(Smi::cast(*return_val), Smi::FromInt(0));
+}
+
+
+TEST(InterpreterConstructWithArguments) {
+  HandleAndZoneScope handles;
+
+  std::string source(
+      "function counter(x, y) { this.count = 0; this.x = 1; this.y = 2000; }\n"
+      "function " +
+      InterpreterTester::function_name() +
+      "() {\n"
+      "  var c = new counter();\n"

[rmcilroy, 2015/10/13 14:07:30]

You're not actually passing the arguments to counter here, were you intending
to? 

[oth, 2015/10/14 08:40:09]

Done.

+      "  return c.y;\n"
+      "}");
+  InterpreterTester tester(handles.main_isolate(), source.c_str());
+  auto callable = tester.GetCallable<>();
+
+  Handle<Object> return_val = callable().ToHandleChecked();
+  CHECK_EQ(Smi::cast(*return_val), Smi::FromInt(2000));
+}