Minor log reader comment + API updates

Change-Id: I55cb0716f4e45e503f435cbc362367130484ef51
Signed-off-by: Austin Schuh <austin.schuh@bluerivertech.com>
diff --git a/aos/events/logging/log_reader.h b/aos/events/logging/log_reader.h
index 7a11495..e536c46 100644
--- a/aos/events/logging/log_reader.h
+++ b/aos/events/logging/log_reader.h
@@ -289,6 +289,9 @@
   }
 
   std::string_view name() const { return log_files_[0].name; }
+  std::string_view log_event_uuid() const {
+    return log_files_[0].log_event_uuid;
+  }
 
   // Set whether to exit the SimulatedEventLoopFactory when we finish reading
   // the logfile.
@@ -730,8 +733,8 @@
     std::vector<message_bridge::NoncausalOffsetEstimator *> filters_;
     message_bridge::MultiNodeNoncausalOffsetEstimator *multinode_filters_;
 
-    // List of NodeEventLoopFactorys (or nullptr if it isn't a forwarded
-    // channel) which correspond to the originating node.
+    // List of States (or nullptr if it isn't a forwarded channel) which
+    // correspond to the originating node.
     std::vector<State *> channel_source_state_;
 
     // This is a cache for channel, connection mapping to the corresponding