Adding version info to the client config request

components/data_reduction_proxy/proto/client_config.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.
 
 syntax = "proto2";
 
 option optimize_for = LITE_RUNTIME;
 
 package data_reduction_proxy;
 
@@ skipping 91 matching lines @@
   // The host name for the proxy server.
   optional string host = 2;
   // The port number for the proxy server.
   optional int32 port = 3;
 }
 
 // Request object to create a client configuration object.
 message CreateClientConfigRequest {
   // A previous per-session key that was assigned by the service.
   optional string session_key = 1;
+
+  // Build version information.
+  optional VersionInfo version_info = 2;
 }
+
+// Build version information.
+message VersionInfo {
+  // The client's platform type.

[buettner, 2016/06/28 22:39:38]

// The client type.

Not sure if this is Chromium style, but can you add a comment pointing to the
list of client strings and mention that it should be one of those? Ideally that
would be an enforced constraint, but a comment is better than nothing.

[RyanSturm, 2016/06/29 19:02:35]

Done.

+  optional string client = 1;
+
+  // The version number, e.g. "6.0.490.1".
+  optional int32 build = 2;
+
+  // The patch number of the chromium client: always a non-negative integer.
+  optional int32 patch = 3;
+
+  // The production channel.
+  optional string channel = 4;
+}