Remove and deprecate SEARCH_SUGGEST_ANSWER

components/metrics/proto/omnibox_event.proto

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 //
 // Stores information about an omnibox interaction.
 
 syntax = "proto2";
 
 option optimize_for = LITE_RUNTIME;
 
@@ skipping 199 matching lines @@
       APP = 19;                     // An app result (eg: the gmail app).
                                     // Used by Android GSA for on-device
                                     // suggestion logging.
       LEGACY_ON_DEVICE = 20;        // An on-device result from a legacy
                                     // provider. That is, this result is not
                                     // from the on-device suggestion provider
                                     // (go/icing). This field is
                                     // used by Android GSA for on-device
                                     // suggestion logging.
       NAVSUGGEST_PERSONALIZED = 21; // A personalized url.
-      SEARCH_SUGGEST_ANSWER   = 22; // A short result for a suggested search.
+      SEARCH_SUGGEST_ANSWER   = 22; // DEPRECATED. Answers no longer have their
+                                    // own type but instead can be attached to
+                                    // suggestions of any type.
     }
     optional ResultType result_type = 2;
 
     // The relevance score for this suggestion.
     optional int32 relevance = 3;
 
     // How many times this result was typed in / selected from the omnibox.
     // Only set for some providers and result_types.  At the time of
     // writing this comment, it is only set for HistoryURL and
     // HistoryQuickProvider matches.
@@ skipping 38 matching lines @@
     // The number of times this provider returned a non-zero number of
     // suggestions during this omnibox session.
     // Note that each provider may define a session differently for its
     // purposes.
     optional int32 times_returned_results_in_session = 5;
   }
   // A list of diagnostic information about each provider.  Providers
   // will appear at most once in this list.
   repeated ProviderInfo provider_info = 12;
 }