Desktop aura: Continue threading context through views.

ui/views/test/views_test_base.h

Index: ui/views/test/views_test_base.h
diff --git a/ui/views/test/views_test_base.h b/ui/views/test/views_test_base.h
index 267cc31734a8916090d6e36a2fe86c550f1b7749..6866f06aaec79550d82cb004b0742e6032f93006 100644
--- a/ui/views/test/views_test_base.h
+++ b/ui/views/test/views_test_base.h
@@ -44,6 +44,11 @@ class ViewsTestBase : public testing::Test {
 
   MessageLoop* message_loop() { return &message_loop_; }
 
+  // Creates a widget of |type| with any platform specific data for use in
+  // cross-platform tests. Will also set WIDGET_OWNS_NATIVE_WIDGET, which most
+  // unit tests want.
+  Widget::InitParams CreateParams(Widget::InitParams::Type type);
+
  private:
   MessageLoopForUI message_loop_;
   scoped_ptr<TestViewsDelegate> views_delegate_;