Layout panels on top of their launcher icons

ash/launcher/launcher_icons_observer.h

Index: ash/launcher/launcher_icons_observer.h
diff --git a/ash/launcher/launcher_icons_observer.h b/ash/launcher/launcher_icons_observer.h
new file mode 100644
index 0000000000000000000000000000000000000000..32763db161f8c262923b001b3ca98c9d7fabc8d0
--- /dev/null
+++ b/ash/launcher/launcher_icons_observer.h
@@ -0,0 +1,19 @@
+
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef ASH_LAUNCHER_LAUNCHER_ICONS_OBSERVER_H_
+#define ASH_LAUNCHER_LAUNCHER_ICONS_OBSERVER_H_
+#pragma once
+
+namespace ash {
+
+class ASH_EXPORT LauncherIconsObserver {

[sky, 2012/03/23 21:41:14]

Name this LauncherViewObserver.

[Dmitry Lomov (no reviews), 2012/03/23 22:40:35]

Here is a bit bigger issue. I'd rather expose LauncherView getter on Launcher,
rename this class into LauncherViewObserver and move Add/RemoveObserver for it
onto LauncherView. Besides being cleaner, this will help to handle auto-hide
stuff as well.

+ public:
+  virtual void OnLauncherIconPositionsChanged() = 0;
+};

[sky, 2012/03/23 21:41:14]

Add protected virtual destructor.

+
+} // namespace ash
+
+#endif  // ASH_LAUNCHER_LAUNCHER_ICONS_OBSERVER_H_