Make sure the non browser/non app widget is fully visible when created on ash

ash/wm/window_state.cc

Index: ash/wm/window_state.cc
diff --git a/ash/wm/window_state.cc b/ash/wm/window_state.cc
index b3448e918557cfd063febdeac7411a3c46755cb6..1a06a58da1bb0a0b876bb2c64457d10d234feab1 100644
--- a/ash/wm/window_state.cc
+++ b/ash/wm/window_state.cc
@@ -41,6 +41,7 @@ WindowState::WindowState(aura::Window* window)
       always_restores_to_restore_bounds_(false),
       hide_shelf_when_fullscreen_(true),
       animate_to_fullscreen_(true),
+      minimum_visibility_(false),
       window_show_type_(ToWindowShowType(GetShowState())) {
   window_->AddObserver(this);
 }