aura: Some changes in Window and Desktop.

ui/aura/desktop_observer.h

Index: ui/aura/desktop_observer.h
diff --git a/ui/aura/desktop_observer.h b/ui/aura/desktop_observer.h
new file mode 100644
index 0000000000000000000000000000000000000000..a63a4e9e933623d5ad0c8bf7cf6f15f8fd5341f3
--- /dev/null
+++ b/ui/aura/desktop_observer.h
@@ -0,0 +1,24 @@
+// Copyright (c) 2011 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 UI_AURA_DESKTOP_OBSERVER_H_
+#define UI_AURA_DESKTOP_OBSERVER_H_
+#pragma once
+
+#include "ui/aura/aura_export.h"
+
+namespace aura {
+
+class AURA_EXPORT DesktopObserver {
+ public:
+  // Invoked after the desktop is resized.
+  virtual void OnDesktopResized(const gfx::Size& new_size) = 0;

[sky, 2011/10/12 22:05:38]

I think if you keep the methods in WindowObserver non-pure virtual you should do
the same here. After all, this is an observer and observers are likely only to
care about a couple of methods.

[sadrul, 2011/10/12 22:59:58]

Done.

+
+ protected:
+  virtual ~DesktopObserver() {}
+};
+
+}  // namespace aura
+
+#endif  // UI_AURA_DESKTOP_OBSERVER_H_