Adding query length parameter to protobuf

Bug: 131940434
Change-Id: Iaa7ca520406df882e154db3662a190607eb61b23
diff --git a/protos/launcher_log.proto b/protos/launcher_log.proto
index 02c6b0f..49fd436 100644
--- a/protos/launcher_log.proto
+++ b/protos/launcher_log.proto
@@ -56,6 +56,7 @@
   optional int32 predictedRank = 15;
   optional TargetExtension extension = 16;
   optional TipType tip_type = 17;
+  optional int32 search_query_length = 18;
 }
 
 // Used to define what type of item a Target would represent.