Add AntiVirus information to the system profile.

components/metrics/proto/system_profile.proto

 // Copyright 2014 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;
 option java_outer_classname = "SystemProfileProtos";
 option java_package = "org.chromium.components.metrics";
 
 package metrics;
 
-// Next tag: 23
+// Next tag: 24
 message SystemProfileProto {
   // The time when the client was compiled/linked, in seconds since the epoch.
   optional int64 build_timestamp = 1;
 
   // A version number string for the application.
   // Most commonly this is the browser version number found in a user agent
   // string, and is typically a 4-tuple of numbers separated by periods.  In
   // cases where the user agent version might be ambiguous (example: Linux 64-
   // bit build, rather than 32-bit build, or a Windows version used in some
   // special context, such as ChromeFrame running in IE), then this may include
@@ skipping 743 matching lines @@
   // after the recording code was implemented.
   enum UmaDefaultState {
     // The enable checkbox was unchecked by default.
     OPT_IN = 0;
     // The enable checkbox was checked by default.
     OPT_OUT = 1;
     // Policy mandated that UMA be enaled, the user had no choice.
     POLICY_FORCED_ENABLED = 2;
   }
   optional UmaDefaultState uma_default_state = 22;
+
+  enum AntiVirusState {
+    // The security product software is turned on and protecting the user.
+    STATE_ON = 0;
+    // The security product software is turned off and protection is disabled.
+    STATE_OFF = 1;
+    // The security product software is in the snoozed state, temporarily off,
+    // and not actively protecting the computer.
+    STATE_SNOOZED = 2;
+    // The security product software has expired and is no longer actively
+    // protecting the computer.
+    STATE_EXPIRED = 3;
+  }
+
+  // Information about AntiVirus products installed.
+  // Next Tag: 6
+  message AntiVirusProduct {
+    // The product name e.g. "System Center Endpoint Protection".

[Alexei Svitkine (slow), 2016/06/01 20:42:35]

Expand comment to mention that it might not be recorded. Same for the other
string.

[Will Harris, 2016/06/02 20:36:27]

Done.

+    optional string product_name = 1;

[Alexei Svitkine (slow), 2016/06/01 20:42:35]

Nit: Add empty lines between the fields.

[Will Harris, 2016/06/02 20:36:27]

Done.

+    // The hash of the product name.
+    optional fixed32 product_name_hash = 2;
+    // The version of the product, as read from the file information.
+    optional string product_version = 3;
+    // The hash of the product version.
+    optional fixed32 product_version_hash = 4;
+    // The current state of the product.
+    optional AntiVirusState product_state = 5;
+  }
+  repeated AntiVirusProduct antivirus_product = 23;
 }