Adding SystemShortcut for RemoteAction

Bug: 117888000
Test: manual test with a prototype
Change-Id: I10ed0a8c0237a85af5ac32a7fc68e1f9d2ffc5ba
diff --git a/protos/launcher_log.proto b/protos/launcher_log.proto
index 41dd0bd..b3ed365 100644
--- a/protos/launcher_log.proto
+++ b/protos/launcher_log.proto
@@ -112,6 +112,7 @@
   CANCEL_TARGET = 14;
   TASK_PREVIEW = 15;
   SPLIT_SCREEN_TARGET = 16;
+  REMOTE_ACTION_SHORTCUT = 17;
 }
 
 enum TipType {