Fix shady dom style querySelector

Author: TimvdLippe

test/unit/property-effects.html

@@ -391,7 +391,14 @@
   });
 
   test('does not parse bindings inside <style>', function() {
-    assert.include(el.shadowRoot.querySelector('style').textContent, "[[binding]]");
+    var style = el.shadowRoot.querySelector('style');
+    // native shadow dom
+    if (style) {
+      assert.include(style.textContent, "[[binding]]");
+    // shady dom
+    } else {
+      assert.include(document.querySelector('[scope="x-basic"]').textContent, "[[binding]]");
+    }
   });
 
 });