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

chrome/browser/resources/settings/reset_page/reset_profile_dialog.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-profile-dialog' is the dialog shown for clearing profile
  * settings. A triggered variant of this dialog can be shown under certain
  * circumstances. See triggered_profile_resetter.h for when the triggered
@@ skipping 14 matching lines @@
       value: false,
     },
 
     /** @private */
     triggeredResetToolName_: {
       type: String,
       value: '',
     },
 
     /** @private */
+    resetRequestOrigin_: String,
+
+    /** @private */
     clearingInProgress_: {
       type: Boolean,
       value: false,
     },
   },
 
   /** @private {!settings.ResetBrowserProxy} */
   browserProxy_: null,
 
   /**
@@ skipping 34 matching lines @@
     this.$.dialog.showModal();
     this.browserProxy_.onShowResetProfileDialog();
   },
 
   /** @override */
   attached: function() {
     this.isTriggered_ =
         settings.getCurrentRoute() == settings.Route.TRIGGERED_RESET_DIALOG;
     if (this.isTriggered_) {
       this.browserProxy_.getTriggeredResetToolName().then(function(name) {
+        this.resetRequestOrigin_ = 'triggeredreset';
         this.triggeredResetToolName_ = name;
         this.showDialog_();
       }.bind(this));
     } else {
+      // For the non-triggered reset dialog, a '#cct' hash indicates that the
+      // reset request came from the Chrome Cleanup Tool by launching Chrome
+      // with the startup URL chrome://settings/resetProfileSettings#cct.
+      var origin = window.location.hash.slice(1).toLowerCase() == 'cct' ?
+          'cct' : settings.getQueryParameters().get('origin');
+      this.resetRequestOrigin_ = origin || '';
       this.showDialog_();
     }
   },
 
   /** @private */
   onCancelTap_: function() {
     this.$.dialog.cancel();
   },
 
   /** @private */
   onResetTap_: function() {
     this.clearingInProgress_ = true;
     this.browserProxy_.performResetProfileSettings(
-        this.$.sendSettings.checked).then(function() {
+        this.$.sendSettings.checked, this.resetRequestOrigin_).then(function() {
       this.clearingInProgress_ = false;
       if (this.$.dialog.open)
         this.$.dialog.close();
       this.fire('reset-done');
     }.bind(this));
   },
 
   /**
    * Displays the settings that will be reported in a new tab.
    * @private
    */
   onShowReportedSettingsTap_: function() {
     this.browserProxy_.showReportedSettings();
   },
 });