Add a new entry to omnibox_event.proto to log specific type of contextual suggestions

components/omnibox/browser/base_search_provider.cc

 // 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.
 
 #include "components/omnibox/browser/base_search_provider.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include "base/feature_list.h"
@@ skipping 96 matching lines @@
     const base::string16& suggestion,
     AutocompleteMatchType::Type type,
     bool from_keyword_provider,
     const TemplateURL* template_url,
     const SearchTermsData& search_terms_data) {
   // These calls use a number of default values.  For instance, they assume
   // that if this match is from a keyword provider, then the user is in keyword
   // mode.  They also assume the caller knows what it's doing and we set
   // this match to look as if it was received/created synchronously.
   SearchSuggestionParser::SuggestResult suggest_result(
-      suggestion, type, suggestion, base::string16(), base::string16(),
-      base::string16(), base::string16(), nullptr, std::string(),
-      std::string(), from_keyword_provider, 0, false, false, base::string16());
+      suggestion, type, 0, suggestion, base::string16(), base::string16(),
+      base::string16(), base::string16(), nullptr, std::string(), std::string(),
+      from_keyword_provider, 0, false, false, base::string16());
   suggest_result.set_received_after_last_keystroke(false);
   return CreateSearchSuggestion(
       NULL, AutocompleteInput(), from_keyword_provider, suggest_result,
       template_url, search_terms_data, 0, false);
 }
 
 void BaseSearchProvider::DeleteMatch(const AutocompleteMatch& match) {
   DCHECK(match.deletable);
   if (!match.GetAdditionalInfo(BaseSearchProvider::kDeletionUrlKey).empty()) {
     deletion_handlers_.push_back(base::MakeUnique<SuggestionDeletionHandler>(
@@ skipping 78 matching lines @@
                           suggestion.type());
 
   if (!template_url)
     return match;
   match.keyword = template_url->keyword();
   match.contents = suggestion.match_contents();
   match.contents_class = suggestion.match_contents_class();
   match.answer_contents = suggestion.answer_contents();
   match.answer_type = suggestion.answer_type();
   match.answer = SuggestionAnswer::copy(suggestion.answer());
+  match.subtype_identifier = suggestion.subtype_identifier();
   if (suggestion.type() == AutocompleteMatchType::SEARCH_SUGGEST_TAIL) {
     match.RecordAdditionalInfo(
         kACMatchPropertyInputText, base::UTF16ToUTF8(input.text()));
     match.RecordAdditionalInfo(
         kACMatchPropertyContentsPrefix,
         base::UTF16ToUTF8(suggestion.match_contents_prefix()));
     match.RecordAdditionalInfo(
         kACMatchPropertyContentsStartIndex,
         static_cast<int>(
             suggestion.suggestion().length() - match.contents.length()));
@@ skipping 253 matching lines @@
 
 void BaseSearchProvider::OnDeletionComplete(
     bool success, SuggestionDeletionHandler* handler) {
   RecordDeletionResult(success);
   deletion_handlers_.erase(std::remove_if(
       deletion_handlers_.begin(), deletion_handlers_.end(),
       [handler](const std::unique_ptr<SuggestionDeletionHandler>& elem) {
         return elem.get() == handler;
       }));
 }