Revert "Revert 239730 "ash_system_tray_delegate -> system_tray_delegate_...""

chrome/browser/ui/ash/system_tray_delegate_chromeos.h

Index: chrome/browser/ui/ash/system_tray_delegate_chromeos.h
diff --git a/chrome/browser/ui/ash/system_tray_delegate_chromeos.h b/chrome/browser/ui/ash/system_tray_delegate_chromeos.h
new file mode 100644
index 0000000000000000000000000000000000000000..e0d834035abf95614f7dd5dbacdd2d7d1ff4814f
--- /dev/null
+++ b/chrome/browser/ui/ash/system_tray_delegate_chromeos.h
@@ -0,0 +1,16 @@
+// Copyright 2013 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 CHROME_BROWSER_UI_ASH_SYSTEM_TRAY_DELEGATE_CHROMEOS_H_
+#define CHROME_BROWSER_UI_ASH_SYSTEM_TRAY_DELEGATE_CHROMEOS_H_
+
+namespace ash {
+class SystemTrayDelegate;
+}
+
+namespace chromeos {
+ash::SystemTrayDelegate* CreateSystemTrayDelegate();
+}
+
+#endif  // CHROME_BROWSER_UI_ASH_SYSTEM_TRAY_DELEGATE_CHROMEOS_H_