Add Brand Code to UMA Uploads

chrome/common/metrics/proto/system_profile.proto

 // Copyright (c) 2012 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.
 //
 // Stores information about the user's brower and system configuration.
 // The system configuration fields are recorded once per client session.
 
 syntax = "proto2";
 
 option optimize_for = LITE_RUNTIME;
@@ skipping 22 matching lines @@
   //   "-devel": this is not an official build of Chrome
   //
   // A full version number string could look similar to:
   // "5.0.322.0-F-devel".
   //
   // This value, when available, is more trustworthy than the UA string
   // associated with the request; and including the postfix, may be more
   // specific.
   optional string app_version = 2;
 
+  // The brand code or distribution tag assigned to a partner, if available.
+  // Brand codes are only available on Windows.  Not every Windows install
+  // though will have a brand code.
+  optional string brand_code = 12;
+
   // The possible channels for an installation, from least to most stable.
   enum Channel {
     CHANNEL_UNKNOWN = 0;  // Unknown channel -- perhaps an unofficial build?
     CHANNEL_CANARY = 1;
     CHANNEL_DEV = 2;
     CHANNEL_BETA = 3;
     CHANNEL_STABLE = 4;
   }
   optional Channel channel = 10;
 
@@ skipping 283 matching lines @@
     // The name of the field trial, as a 32-bit identifier.
     // Currently, the identifier is a hash of the field trial's name.
     optional fixed32 name_id = 1;
 
     // The user's group within the field trial, as a 32-bit identifier.
     // Currently, the identifier is a hash of the group's name.
     optional fixed32 group_id = 2;
   }
   repeated FieldTrial field_trial = 9;
 }