Experimental alignment layout manager using a property on the views

ui/views/view.cc

Index: ui/views/view.cc
diff --git a/ui/views/view.cc b/ui/views/view.cc
index 3cb42dca9dab0b6b57422f07348b4cc15293f3fa..0640d6f495c0244f1aa487171e4f15e39763fc2a 100644
--- a/ui/views/view.cc
+++ b/ui/views/view.cc
@@ -105,6 +105,7 @@ View::View()
       parent_(NULL),
       visible_(true),
       enabled_(true),
+      attributes_(this),
       notify_enter_exit_on_child_(false),
       registered_for_visible_bounds_notification_(false),
       needs_layout_(true),
@@ -1858,6 +1859,7 @@ void View::PropagateAddNotifications(
   for (int i = 0, count = child_count(); i < count; ++i)
     child_at(i)->PropagateAddNotifications(details);
   ViewHierarchyChangedImpl(true, details);
+  attributes_.ViewNotification(this);
 }
 
 void View::PropagateNativeViewHierarchyChanged() {
@@ -1954,6 +1956,7 @@ void View::BoundsChanged(const gfx::Rect& previous_bounds) {
       (*i)->OnVisibleBoundsChanged();
     }
   }
+  attributes_.ViewNotification(this);
 }
 
 // static