Revert of ash: Use system tray mojo interface to show system update tray icon

chrome/browser/ui/ash/system_tray_delegate_utils.h

Index: chrome/browser/ui/ash/system_tray_delegate_utils.h
diff --git a/chrome/browser/ui/ash/system_tray_delegate_utils.h b/chrome/browser/ui/ash/system_tray_delegate_utils.h
new file mode 100644
index 0000000000000000000000000000000000000000..79abdbd703af58e1ceb93f89a842f9c7aa8ea406
--- /dev/null
+++ b/chrome/browser/ui/ash/system_tray_delegate_utils.h
@@ -0,0 +1,17 @@
+// Copyright 2014 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_UTILS_H_
+#define CHROME_BROWSER_UI_ASH_SYSTEM_TRAY_DELEGATE_UTILS_H_
+
+class UpgradeDetector;
+
+namespace ash {
+struct UpdateInfo;
+}
+
+// Fills |info| structure with data from |detector|.
+void GetUpdateInfo(const UpgradeDetector* detector, ash::UpdateInfo* info);
+
+#endif  // CHROME_BROWSER_UI_ASH_SYSTEM_TRAY_DELEGATE_UTILS_H_