Positions the launcher in the bottom left corner. Adds ShellDelegate

ui/aura/window.cc

Index: ui/aura/window.cc
diff --git a/ui/aura/window.cc b/ui/aura/window.cc
index 07c48e64fc089fbc2a43102b87cbb791ca4dba68..f0a4fab9c9d5b937103b33008cdcba8136a51fa5 100644
--- a/ui/aura/window.cc
+++ b/ui/aura/window.cc
@@ -205,11 +205,15 @@ void Window::AddChild(Window* child) {
   child->parent_ = this;
   layer_->Add(child->layer_.get());
   children_.push_back(child);
+  if (GetRoot())
+    Desktop::GetInstance()->WindowAdded(child);
 }
 
 void Window::RemoveChild(Window* child) {
   Windows::iterator i = std::find(children_.begin(), children_.end(), child);
   DCHECK(i != children_.end());
+  if (GetRoot())
+    Desktop::GetInstance()->WillRemoveWindow(child);
   child->parent_ = NULL;
   layer_->Remove(child->layer_.get());
   children_.erase(i);