Layout panels on top of their launcher icons

ash/launcher/launcher.cc

Index: ash/launcher/launcher.cc
diff --git a/ash/launcher/launcher.cc b/ash/launcher/launcher.cc
index 551644277b3d582cb0cd2e9be499491718064b70..afb05dc85438d7cf715351a2a9c67e051b6b0697 100644
--- a/ash/launcher/launcher.cc
+++ b/ash/launcher/launcher.cc
@@ -186,6 +186,14 @@ gfx::Rect Launcher::GetScreenBoundsOfItemIconForWindow(aura::Window* window) {
                    bounds.height());
 }
 
+void Launcher::AddIconObserver(LauncherIconObserver* observer) {
+  launcher_view_->AddIconObserver(observer);
+}
+
+void Launcher::RemoveIconObserver(LauncherIconObserver* observer) {
+  launcher_view_->RemoveIconObserver(observer);
+}
+
 bool Launcher::IsShowingMenu() const {
   return launcher_view_->IsShowingMenu();
 }