Incorporate comments in Dbus code and add Eol icon

chrome/browser/ui/webui/help/version_updater.h

Index: chrome/browser/ui/webui/help/version_updater.h
diff --git a/chrome/browser/ui/webui/help/version_updater.h b/chrome/browser/ui/webui/help/version_updater.h
index 87cda9ebafa7980bca26e0fbde84160dc4bb3326..3921ea8d1fccf6d0b2c2fb2b5caaa7469dcba373 100644
--- a/chrome/browser/ui/webui/help/version_updater.h
+++ b/chrome/browser/ui/webui/help/version_updater.h
@@ -11,6 +11,10 @@
 #include "base/strings/string16.h"
 #include "build/build_config.h"
 
+#if defined(OS_CHROMEOS)
+#include "third_party/cros_system_api/dbus/update_engine/dbus-constants.h"
+#endif  // defined(OS_CHROMEOS)
+
 namespace content {
 class WebContents;
 }
@@ -42,7 +46,8 @@ class VersionUpdater {
   // types.
 #if defined(OS_CHROMEOS)
   typedef base::Callback<void(const std::string&)> ChannelCallback;
-  typedef base::Callback<void(int status)> EolStatusCallback;
+  typedef base::Callback<void(update_engine::EndOfLifeStatus status)>
+      EolStatusCallback;
 #endif
 
   // Used to update the client of status changes. int parameter is the progress