Add enum value for SEE_SUGGESTED_SITES action in Feed

This change is mirrored in Chromium by https://chromium-review.googlesource.com/c/chromium/src/+/1956069/.

PiperOrigin-RevId: 284658623
Change-Id: If92dcffd15c0c919a71ffc10163b8f380e2fc1fd
diff --git a/src/main/proto/search/now/ui/action/feed_action.proto b/src/main/proto/search/now/ui/action/feed_action.proto
index a17ccff..3ff51be 100644
--- a/src/main/proto/search/now/ui/action/feed_action.proto
+++ b/src/main/proto/search/now/ui/action/feed_action.proto
@@ -67,6 +67,7 @@
     HIDE_ELEMENT = 13;
     SHOW_TOOLTIP = 14;
     NOT_INTERESTED_IN = 15;
+    SEE_SUGGESTED_SITES = 16;
     reserved 9, 10;  // Deprecated
   }
   optional Type type = 1;