Cast: Add GeneralDescription proto to LogMetadata and populate it when

media/cast/logging/proto/raw_events.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.
 
 // Protocol for audio messages.
 
 syntax = "proto2";
 
 option optimize_for = LITE_RUNTIME;
 
@@ skipping 50 matching lines @@
   FRAME_ENCODED = 31;
   FRAME_ACK_RECEIVED = 32;
   FRAME_ACK_SENT = 33;
   FRAME_DECODED = 34;
   FRAME_PLAYOUT = 35;
   PACKET_SENT_TO_NETWORK = 36;
   PACKET_RETRANSMITTED = 37;
   PACKET_RECEIVED = 38;
 }
 
+// Contains information independent of the stream that describes the system
+// setup, e.g. OS and hardware info.
+message GeneralDescription {
+  optional string product = 1;
+  optional string product_version = 2;
+  optional string os = 3;
+}
+
 // Each log will contain one |LogMetadata|.
 message LogMetadata {
   // |true| if the events are related to audio. |false| if they are related to
   // video.
   optional bool is_audio = 1;
 
   // Used as a reference for all event entries.
   // i.e. the original RTP timestamp for each event will be
   // |first_rtp_timestamp| + |relative_rtp_timestamp|.
   optional uint32 first_rtp_timestamp = 2;
 
   // Number of AggregatedFrameEvent's.
   optional int32 num_frame_events = 3;
 
   // Number of AggregatedPacketEvent's.
   optional int32 num_packet_events = 4;
 
   // The internal timestamp value in milliseconds that represents the time
   // of the Unix epoch. This is used for relating the timestamps in the events
   // to a real time and date.
   optional int64 reference_timestamp_ms_at_unix_epoch = 5;
 
-  // Extra data to attach to the log, e.g. system info or
-  // experiment tags, in key-value JSON string format.
+  // Extra data to attach to the log, e.g. experiment tags,
+  // in key-value JSON string format. The data is supplied by the application.
   optional string extra_data = 6;
+
+  optional GeneralDescription general_description = 7;
 }
 
 message AggregatedFrameEvent {
   optional uint32 relative_rtp_timestamp = 1;
 
   repeated EventType event_type = 2 [packed = true];
   
   // The internal timestamp value in milliseconds. Use
   // LogMetadata.reference_timestamp_ms_at_unix_epoch to relate to a real time
   // and date.
@@ skipping 23 matching lines @@
 
   // Size of the packet.
   optional int32 size = 4;
 }
 
 message AggregatedPacketEvent {
   optional uint32 relative_rtp_timestamp = 1;
   repeated BasePacketEvent base_packet_event = 2;
 };