Introduce new Attributes to indicate data source of Toast results.

Bug: 278734310
Test: Manual
Flag: NA
Change-Id: I44fe19ba4f172b241edd958df5184793b4c6f74e
diff --git a/protos/launcher_atom.proto b/protos/launcher_atom.proto
index 55301ff..cebcd42 100644
--- a/protos/launcher_atom.proto
+++ b/protos/launcher_atom.proto
@@ -135,7 +135,7 @@
   }
 }
 
-// Next value 45
+// Next value 48
 enum Attribute {
   option allow_alias = true;
 
@@ -187,6 +187,11 @@
   ALL_APPS_SEARCH_RESULT_SYSTEM_POINTER = 42;
   ALL_APPS_SEARCH_RESULT_EDUCARD = 43;
 
+  // Result sources
+  DATA_SOURCE_APPSEARCH_APP_PREVIEW = 45;
+  DATA_SOURCE_APPSEARCH_APP_SRP_PREVIEW = 46;
+  DATA_SOURCE_AIAI_SEARCH_ROOT = 47;
+
   // Web suggestions provided by AGA
   ALL_APPS_SEARCH_RESULT_WEB_SUGGEST = 39;