Attempt 2 at: Makes Window not change focus and send out

ui/aura/window.h

Index: ui/aura/window.h
diff --git a/ui/aura/window.h b/ui/aura/window.h
index 1965a8d522a74abd4978054c411d0a39797a6a48..8d98ffa54f18ac4a39a60c308b3c2e1f09a63d41 100644
--- a/ui/aura/window.h
+++ b/ui/aura/window.h
@@ -387,6 +387,11 @@ class AURA_EXPORT Window : public ui::LayerDelegate,
                             bool return_tightest,
                             bool for_event_handling);
 
+  // Implementation of RemoveChild(). If |child| is being removed as the result
+  // of an add, |new_parent| is the new parent |child| is going to be parented
+  // to.
+  void RemoveChildImpl(Window* child, Window* new_parent);
+
   // Called when this window's parent has changed.
   void OnParentChanged();