Prepare LayoutTests for lazy loading testRunner and internals.

LayoutTests/printing/page-rule-specificity.html

Index: LayoutTests/printing/page-rule-specificity.html
diff --git a/LayoutTests/printing/page-rule-specificity.html b/LayoutTests/printing/page-rule-specificity.html
index adc92d900ff86c7318af13001fe80d3c68316e84..cf91164db4e0b336a65f1401d65493fe9afea34d 100644
--- a/LayoutTests/printing/page-rule-specificity.html
+++ b/LayoutTests/printing/page-rule-specificity.html
@@ -17,8 +17,8 @@
     <p id="log"></p>
     <script>
         test(function(){
-            assert_own_property(window, "testRunner");
-            assert_own_property(window, "internals");
+            assert_true(window.testRunner instanceof Object);
+            assert_true(window.internals instanceof Object);
         }, "Test needs testRunner framework.");
 
         test(function(){