Add a class to parse answer json.

components/omnibox/base_search_provider.cc

Index: components/omnibox/base_search_provider.cc
diff --git a/components/omnibox/base_search_provider.cc b/components/omnibox/base_search_provider.cc
index 5f054ad94ebee27fbd56efeb9bee8714230ed02f..5b287c0edb7dcf0e9d8dd7ba204f127339780643 100644
--- a/components/omnibox/base_search_provider.cc
+++ b/components/omnibox/base_search_provider.cc
@@ -111,8 +111,8 @@ AutocompleteMatch BaseSearchProvider::CreateSearchSuggestion(
   // 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(), std::string(), std::string(),
-      from_keyword_provider, 0, false, false, base::string16());
+      base::string16(), base::string16(), SuggestionAnswer(), 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,
@@ -208,6 +208,7 @@ AutocompleteMatch BaseSearchProvider::CreateSearchSuggestion(
   match.contents_class = suggestion.match_contents_class();
   match.answer_contents = suggestion.answer_contents();
   match.answer_type = suggestion.answer_type();
+  match.answer = suggestion.answer();
   if (suggestion.type() == AutocompleteMatchType::SEARCH_SUGGEST_INFINITE) {
     match.RecordAdditionalInfo(
         kACMatchPropertyInputText, base::UTF16ToUTF8(input.text()));
@@ -430,6 +431,7 @@ void BaseSearchProvider::AddMatchToMap(
         more_relevant_match.answer_type.empty()) {
       more_relevant_match.answer_type = less_relevant_match.answer_type;
       more_relevant_match.answer_contents = less_relevant_match.answer_contents;
+      more_relevant_match.answer = less_relevant_match.answer;
     }
   }
 }