Mac/Linux: Ensure window size constraints propagate to the window server during Init

ui/views/test/widget_test.h

Index: ui/views/test/widget_test.h
diff --git a/ui/views/test/widget_test.h b/ui/views/test/widget_test.h
index e82019198cd1779686855db2f410dd133592b82e..6d1169e620658ef9e500e849396a41af1fb92091 100644
--- a/ui/views/test/widget_test.h
+++ b/ui/views/test/widget_test.h
@@ -115,6 +115,10 @@ class WidgetTest : public ViewsTestBase {
   // Both windows must be visible.
   static bool IsWindowStackedAbove(Widget* above, Widget* below);
 
+  // Query the native window system for the minimum size configured for user
+  // initiated window resizes.
+  static gfx::Size GetNativeWidgetMinimumContentSize(Widget* widget);
+
   // Return the event processor for |widget|. On aura platforms, this is an
   // aura::WindowEventDispatcher. Otherwise, it is a bridge to the OS event
   // processor.