MD Settings: Second try at fixing ResetSettingsHandler crash

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

Index: chrome/browser/ui/webui/settings/reset_settings_handler.h
diff --git a/chrome/browser/ui/webui/settings/reset_settings_handler.h b/chrome/browser/ui/webui/settings/reset_settings_handler.h
index bb4d9f2207c61931ef524c92eb0557cbcd3ff6b1..8cd879e44ac7a113797b87e4105adfdf54adb2e9 100644
--- a/chrome/browser/ui/webui/settings/reset_settings_handler.h
+++ b/chrome/browser/ui/webui/settings/reset_settings_handler.h
@@ -82,8 +82,10 @@ class ResetSettingsHandler : public SettingsPageUIHandler {
 
   // Resets profile settings to default values. |send_settings| is true if user
   // gave their consent to upload broken settings to Google for analysis.
+  // |callback_id| must be passed by value, as ResetProfile can destroy its
+  // calling callback, which can clobber const-ref parameters.
   void ResetProfile(
-      const std::string& callback_id,
+      const std::string callback_id,
       bool send_settings,
       reset_report::ChromeResetReport::ResetRequestOrigin request_origin);