Fixes and test updates for aura-mus

ui/views/touchui/touch_selection_menu_runner_views_unittest.cc

Index: ui/views/touchui/touch_selection_menu_runner_views_unittest.cc
diff --git a/ui/views/touchui/touch_selection_menu_runner_views_unittest.cc b/ui/views/touchui/touch_selection_menu_runner_views_unittest.cc
index 9a557b22e7ed5b2134944c1a51117dbf31bcac56..34ea2b22a9712f9929a85a4872ffd3a804d70ad6 100644
--- a/ui/views/touchui/touch_selection_menu_runner_views_unittest.cc
+++ b/ui/views/touchui/touch_selection_menu_runner_views_unittest.cc
@@ -30,6 +30,17 @@ class TouchSelectionMenuRunnerViewsTest : public ViewsTestBase,
   ~TouchSelectionMenuRunnerViewsTest() override {}
 
  protected:
+  void SetUp() override {
+    ViewsTestBase::SetUp();
+    // These tests expect NativeWidgetAura, force it's creation.

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

nit: "its"

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

Done.

+    // TODO(sky): the reason these end up using NativeWidgetAura is because they

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

optional nit: cite a bug?

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

Done.

+    // create a widget parented to GetContext(). GetContext() currently always
+    // returns an aura::Window in a fake WindowTreeHost. For aura-mus we should
+    // not create a fake WindowTreeHost.
+    ViewsDelegate::GetInstance()->set_native_widget_factory(
+        ViewsDelegate::NativeWidgetFactory());
+  }
+
   void set_no_commmand_available(bool no_command) {
     no_command_available_ = no_command;
   }