Makes sure switching workspaces only animations windows that want to

ui/aura/window.h

Index: ui/aura/window.h
diff --git a/ui/aura/window.h b/ui/aura/window.h
index 934bccb6bbf69405be1d5a94fab8bb024d6c8f48..64114406f661d2b469c5fb460483c911e03b6073 100644
--- a/ui/aura/window.h
+++ b/ui/aura/window.h
@@ -123,6 +123,10 @@ class AURA_EXPORT Window : public ui::LayerDelegate {
   void Hide();
   // Returns true if this window and all its ancestors are visible.
   bool IsVisible() const;
+  // Returns the visibility requested by this window. IsVisible() takes into
+  // account the visibility of the layer and ancestors, where as this tracks
+  // whether Show() without a Hide() has been invoked.
+  bool TargetVisibility() const { return visible_; }
 
   // Returns the window's bounds in screen coordinates.
   gfx::Rect GetScreenBounds() const;