Revert "chromeos: Add a bool flag to catch crash cause of http://crbug.com/134507."

ui/aura/window.h

Index: ui/aura/window.h
diff --git a/ui/aura/window.h b/ui/aura/window.h
index d9bc9b19051503eab69ebdff2683974c70ed3ece..25744f40246713ac7b2cb8db88b3fbadffbb2f6b 100644
--- a/ui/aura/window.h
+++ b/ui/aura/window.h
@@ -479,13 +479,6 @@ class AURA_EXPORT Window : public ui::LayerDelegate,
 
   std::map<const void*, Value> prop_map_;
 
-  // A boolean flag to debug crash in http://crbug.com/134507. It is set when
-  // SetVisible is called and reset when SetVisible finishes. In Window dtor,
-  // the flag is CHECKed to catch the case that Window is destroyed during
-  // SetVisbile(false).
-  // TODO(xiyuan): Remove this when http://crbug.com/134507 is resolved.
-  bool in_set_visible_call_;
-
   DISALLOW_COPY_AND_ASSIGN(Window);
 };