md-settings: add reset request origin to reset feedback proto.

chrome/browser/resources/settings/reset_page/reset_page.js

 // Copyright 2015 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.
 
 /**
  * @fileoverview
  * 'settings-reset-page' is the settings page containing reset
  * settings.
  *
  * Example:
@@ skipping 34 matching lines @@
    * @protected
    */
   currentRouteChanged: function(route) {
     this.showResetProfileDialog_ =
         route == settings.Route.TRIGGERED_RESET_DIALOG ||
         route == settings.Route.RESET_DIALOG;
   },
 
   /** @private */
   onShowResetProfileDialog_: function() {
-    settings.navigateTo(settings.Route.RESET_DIALOG);
+    settings.navigateTo(settings.Route.RESET_DIALOG,
+                        new URLSearchParams('origin=userclick'));
   },
 
   /** @private */
   onResetProfileDialogClose_: function() {
     settings.navigateToPreviousRoute();
   },
 
 <if expr="chromeos">
   /** @private */
   onShowPowerwashDialog_: function() {
     this.showPowerwashDialog_ = true;
   },
 
   /** @private */
   onPowerwashDialogClose_: function() {
     this.showPowerwashDialog_ = false;
   },
 </if>
 });