Release aura::Desktop event handler windows on detaching an ancestor window.

ui/aura/window.cc

Index: ui/aura/window.cc
diff --git a/ui/aura/window.cc b/ui/aura/window.cc
index 6b4c5d2553823dc126021633a0cf45583728585e..49676f0cc7d825bfec152bb594666f2b9fc0731c 100644
--- a/ui/aura/window.cc
+++ b/ui/aura/window.cc
@@ -277,6 +277,14 @@ void Window::RemoveChild(Window* child) {
   child->OnParentChanged();
 }
 
+bool Window::Contains(const Window* other) const {
+  for (const Window* parent = other; parent; parent = parent->parent()) {

[sky, 2011/11/28 21:55:25]

nit: use parent->parent_ here.

[flackr, 2011/11/29 14:54:14]

Done.

+    if (parent == this)
+      return true;
+  }
+  return false;
+}
+
 Window* Window::GetChildById(int id) {
   return const_cast<Window*>(const_cast<const Window*>(this)->GetChildById(id));
 }