Recommit r125950, which was reverted by r125958 due to link failures on win_aura bot.

Aura/Ash split: Move ScreenAura to aura::RootWindowScreen.

What is now aura::RootWindowScreen was tightly bundled with aura::RootWindow. Instead of moving it to ash::ScreenAsh, I renamed it aurea::RootWindowScreen because there's a bunch of unit tests that use RootWindow as if it were the desktop. Screen integration stuff has been moved out of RootWindow (and related observers) and into ash::Shell.

BUG=116458
First Review URL: http://codereview.chromium.org/9616045

Review URL: http://codereview.chromium.org/9696008

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@126464 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 24 insertions, 0 deletions

diff --git a/ash/shell_observer.h b/ash/shell_observer.h
new file mode 100644
index 0000000..0ecf927
--- /dev/null
+++ b/ash/shell_observer.h
@@ -0,0 +1,24 @@
+// 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_SHELLOBSERVER_H_
+#define ASH_SHELLOBSERVER_H_
+#pragma once
+
+#include "ash/ash_export.h"
+
+namespace ash {
+
+class ASH_EXPORT ShellObserver {
+ public:
+  // Invoked after the screen's work area insets changes.
+  virtual void OnScreenWorkAreaInsetsChanged() {}
+
+ protected:
+  virtual ~ShellObserver() {}
+};
+
+}  // namespace ash
+
+#endif  // ASH_SHELLOBSERVER_H_