Fix should() to throw with no argument

third_party/WebKit/LayoutTests/webaudio/unit-tests/audit.html

Index: third_party/WebKit/LayoutTests/webaudio/unit-tests/audit.html
diff --git a/third_party/WebKit/LayoutTests/webaudio/unit-tests/audit.html b/third_party/WebKit/LayoutTests/webaudio/unit-tests/audit.html
index 0181a957fab90d014d056a5072f75c6a22e72a79..e83cb2fc78e8e46cd5dbb0b713c8746a25405502 100644
--- a/third_party/WebKit/LayoutTests/webaudio/unit-tests/audit.html
+++ b/third_party/WebKit/LayoutTests/webaudio/unit-tests/audit.html
@@ -19,6 +19,8 @@
       should(function () { var foo1 = 0; }, 'Setting foo1 to 0').notThrow();
       should(function () { var foo2 = bar; }).throw();
       should(function () { var foo3 = bar; }).throw('ReferenceError');
+      should(() => { should(); }, 'Calling should() with no argument')
+          .throw('Error');
       should(3 < 5, '3 < 5').beTrue();
       should(false).beFalse();
       should(1).beEqualTo(1)