chromeos: converts WindowState to aura::Window

ash/frame/custom_frame_view_ash.h

Index: ash/frame/custom_frame_view_ash.h
diff --git a/ash/frame/custom_frame_view_ash.h b/ash/frame/custom_frame_view_ash.h
index d4822c676cde06190fa932cb85694ecbcdd2d58a..26337a225bacb04b2324ec55f1f06532a5766d11 100644
--- a/ash/frame/custom_frame_view_ash.h
+++ b/ash/frame/custom_frame_view_ash.h
@@ -95,6 +95,7 @@ class ASH_EXPORT CustomFrameViewAsh : public views::NonClientFrameView {
  private:
   class OverlayView;
   friend class TestWidgetConstraintsDelegate;
+  friend class CustomFrameViewAshSizeLock;
 
   // views::NonClientFrameView:
   bool DoesIntersectRect(const views::View* target,
@@ -117,6 +118,8 @@ class ASH_EXPORT CustomFrameViewAsh : public views::NonClientFrameView {
 
   ImmersiveFullscreenControllerDelegate* immersive_delegate_;
 
+  static bool use_empty_minimum_size_for_test_;
+
   DISALLOW_COPY_AND_ASSIGN(CustomFrameViewAsh);
 };