[Mac] DialogBrowserTest implementation to invoke Content settings bubble dialogs.

ui/views/test/widget_test_aura.cc

Index: ui/views/test/widget_test_aura.cc
diff --git a/ui/views/test/widget_test_aura.cc b/ui/views/test/widget_test_aura.cc
index 8cabaf5cf256a5634350549cb3f7e8ccdf606520..53af04557b2b0743e37927e8208e277471f65074 100644
--- a/ui/views/test/widget_test_aura.cc
+++ b/ui/views/test/widget_test_aura.cc
@@ -163,10 +163,10 @@ bool WidgetTest::IsNativeWindowTransparent(gfx::NativeWindow window) {
 
 // static
 Widget::Widgets WidgetTest::GetAllWidgets() {
-  std::vector<aura::Window*> toplevel = GetAllTopLeveLWindows();
+  std::vector<aura::Window*> toplevels = GetAllTopLeveLWindows();
   Widget::Widgets all_widgets;
-  for (aura::Window* root : toplevel)
-    Widget::GetAllChildWidgets(root, &all_widgets);
+  for (aura::Window* window : toplevels)
+    Widget::GetAllChildWidgets(window->GetRootWindow(), &all_widgets);
   return all_widgets;
 }