Fixes and test updates for aura-mus

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 bad9edd96f4c760a9a701112e1448bf2031b5596..6a66139c7d8cb47911d69eb5c7ab22410f88856f 100644
--- a/ui/views/widget/widget_unittest.cc
+++ b/ui/views/widget/widget_unittest.cc
@@ -847,6 +847,10 @@ TEST_F(WidgetObserverTest, DISABLED_VisibilityChange) {
 }
 
 TEST_F(WidgetObserverTest, DestroyBubble) {
+  // This test expect NativeWidgetAura, force it's creation.

[msw, 2016/11/08 23:38:27]

nit: "its"

[sky, 2016/11/09 00:06:01]

Done.

+  ViewsDelegate::GetInstance()->set_native_widget_factory(
+      ViewsDelegate::NativeWidgetFactory());
+
   WidgetAutoclosePtr anchor(CreateTopLevelPlatformWidget());
   anchor->Show();
 
@@ -1271,6 +1275,11 @@ TEST_F(WidgetTest, DISABLED_FocusChangesOnBubble) {
 }
 
 TEST_F(WidgetTest, BubbleControlsResetOnInit) {
+  // This test creates a NativeWidgetAura and then a bubble parented to it. This
+  // means the test needs a NativeWidgetAura for the bubble as well.
+  ViewsDelegate::GetInstance()->set_native_widget_factory(
+      ViewsDelegate::NativeWidgetFactory());
+
   WidgetAutoclosePtr anchor(CreateTopLevelPlatformWidget());
   anchor->Show();