MacViews: Fix positioning of top-level Widgets with parents

ui/views/widget/widget_unittest.cc

Index: ui/views/widget/widget_unittest.cc
diff --git a/ui/views/widget/widget_unittest.cc b/ui/views/widget/widget_unittest.cc
index 7c739d2b758ac66cc330a4ed45bc102a1c25bc1f..083642169627ac2317ad9599d518572de5afe1aa 100644
--- a/ui/views/widget/widget_unittest.cc
+++ b/ui/views/widget/widget_unittest.cc
@@ -1005,8 +1005,11 @@ TEST_F(WidgetObserverTest, WidgetBoundsChangedNative) {
 
   EXPECT_FALSE(widget_bounds_changed());
 
-  // Init causes a bounds change, even while not showing.
-  widget->Init(CreateParams(Widget::InitParams::TYPE_WINDOW));
+  // Init causes a bounds change, even while not showing. Note some platforms
+  // cause a bounds change even when the bounds are empty. Mac does not.
+  Widget::InitParams params = CreateParams(Widget::InitParams::TYPE_WINDOW);
+  params.bounds = gfx::Rect(0, 0, 100, 100);
+  widget->Init(params);
   EXPECT_TRUE(widget_bounds_changed());
   reset();