Add origin of settings reset request to feedback reports.

chrome/browser/profile_resetter/profile_reset_report.proto

 // 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.
 //
 // Sync protocol for sending reset reports.
 
 syntax = "proto2";
 
 package reset_report;
 
@@ skipping 44 matching lines @@
   message Extension {
     optional string extension_id = 1;
     optional string extension_name = 2;
   }
 
   repeated Extension enabled_extensions = 17;
 
   // Full command line (executable and parameters) of shotcuts to start Chrome.
   repeated string shortcuts = 18;
 
-  // next available tag number: 19.
+  // Specified where the request for the settings reset came from.

[robertshield, 2016/08/10 20:35:41]

nit: s/Specified/Specifies/

[alito, 2016/08/10 21:06:32]

Done.

+  enum ResetRequestOrigin {
+    RESET_REQUEST_ORIGIN_UNSPECIFIED = 0;
+    // User clicked on the reset button on the settings page.
+    RESET_REQUEST_ORIGIN_USER_CLICK = 1;
+    // A settings reset was requested by the Chrome Cleanup Tool.
+    RESET_REQUEST_ORIGIN_CCT = 2;
+    // The triggered settings reset API was used.
+    RESET_REQUEST_ORIGIN_TRIGGERED_RESET = 3;
+    // None of the other cases. Possibly by navigating to
+    // chrome://settings/resetProfileSettings directly or launching
+    // chrome with that URL as an argument.
+    RESET_REQUEST_ORIGIN_UNKNOWN = 4;
+  }
+
+  optional ResetRequestOrigin reset_request_origin = 19;
+
+  // next available tag number: 20.
 }