Settings: About: Fix cros channel info.

chrome/browser/ui/webui/settings/about_handler.h

Index: chrome/browser/ui/webui/settings/about_handler.h
diff --git a/chrome/browser/ui/webui/settings/about_handler.h b/chrome/browser/ui/webui/settings/about_handler.h
index 6f275d0fc8881fc83ed0f7408d9ebc65e00198a5..7cc87461b9649d25d62b9fca08db6da60cfb0f28 100644
--- a/chrome/browser/ui/webui/settings/about_handler.h
+++ b/chrome/browser/ui/webui/settings/about_handler.h
@@ -105,6 +105,8 @@ class AboutHandler : public settings::SettingsPageUIHandler,
   // C++ callback for either of |HandleGetCurrentChannel| or
   // |HandleGetTargetChannel|,
   void OnGetChannelReady(std::string callback_id, const std::string& channel);
+
+  void HandleGetCanChangeChannel(const base::ListValue* args);
 #endif
 
   // Checks for and applies update.