Add user event logging for action on search box
b/31772967

Change-Id: Ide652ddfad931e392b21f5a2bbdf9f07729d0383
diff --git a/protos/launcher_log.proto b/protos/launcher_log.proto
index 3730555..448cf64 100644
--- a/protos/launcher_log.proto
+++ b/protos/launcher_log.proto
@@ -62,6 +62,7 @@
   WIDGET = 3;
   FOLDER_ICON = 4;
   DEEPSHORTCUT = 5;
+  SEARCHBOX = 6;
 }
 
 // Used to define what type of container a Target would represent.