Drop |languages| from {Format,Elide}Url* and IDNToUnicode

components/omnibox/browser/history_url_provider.cc

Index: components/omnibox/browser/history_url_provider.cc
diff --git a/components/omnibox/browser/history_url_provider.cc b/components/omnibox/browser/history_url_provider.cc
index 763522b8ffc6af31bd38a07c78e9b41e287d3437..991d7153cea0bd0c5bce00bdbf4cbe5fef922724 100644
--- a/components/omnibox/browser/history_url_provider.cc
+++ b/components/omnibox/browser/history_url_provider.cc
@@ -423,7 +423,6 @@ HistoryURLProviderParams::HistoryURLProviderParams(
     const AutocompleteInput& input,
     bool trim_http,
     const AutocompleteMatch& what_you_typed_match,
-    const std::string& languages,
     TemplateURL* default_search_provider,
     const SearchTermsData& search_terms_data)
     : message_loop(base::MessageLoop::current()),
@@ -434,7 +433,6 @@ HistoryURLProviderParams::HistoryURLProviderParams(
       failed(false),
       exact_suggestion_is_in_history(false),
       promote_type(NEITHER),
-      languages(languages),
       default_search_provider(default_search_provider ?
           new TemplateURL(default_search_provider->data()) : NULL),
       search_terms_data(new SearchTermsDataSnapshot(search_terms_data)) {
@@ -518,8 +516,7 @@ void HistoryURLProvider::Start(const AutocompleteInput& input,
   // 2.
   scoped_ptr<HistoryURLProviderParams> params(new HistoryURLProviderParams(
       fixed_up_input, trim_http, what_you_typed_match,
-      client()->GetAcceptLanguages(), default_search_provider,
-      client()->GetSearchTermsData()));
+      default_search_provider, client()->GetSearchTermsData()));
   // Note that we use the non-fixed-up input here, since fixup may strip
   // trailing whitespace.
   params->prevent_inline_autocomplete = PreventInlineAutocomplete(input);
@@ -580,7 +577,7 @@ AutocompleteMatch HistoryURLProvider::SuggestExactInput(
     DCHECK(!trim_http ||
            !AutocompleteInput::HasHTTPScheme(input.text()));
     base::string16 display_string(url_formatter::FormatUrl(
-        destination_url, std::string(),
+        destination_url,
         url_formatter::kFormatUrlOmitAll & ~url_formatter::kFormatUrlOmitHTTP,
         net::UnescapeRule::SPACES, nullptr, nullptr, nullptr));
     const size_t offset = trim_http ? TrimHttpPrefix(&display_string) : 0;
@@ -1151,8 +1148,6 @@ AutocompleteMatch HistoryURLProvider::HistoryMatchToACMatch(
   DCHECK(match.destination_url.is_valid());
   size_t inline_autocomplete_offset =
       history_match.input_location + params.input.text().length();
-  std::string languages = (match_type == WHAT_YOU_TYPED) ?
-      std::string() : params.languages;
   const url_formatter::FormatUrlTypes format_types =
       url_formatter::kFormatUrlOmitAll &
       ~((params.trim_http && !history_match.match_in_scheme)
@@ -1161,7 +1156,7 @@ AutocompleteMatch HistoryURLProvider::HistoryMatchToACMatch(
   match.fill_into_edit =
       AutocompleteInput::FormattedStringWithEquivalentMeaning(
           info.url(),
-          url_formatter::FormatUrl(info.url(), languages, format_types,
+          url_formatter::FormatUrl(info.url(), format_types,
                                    net::UnescapeRule::SPACES, nullptr, nullptr,
                                    &inline_autocomplete_offset),
           client()->GetSchemeClassifier());
@@ -1185,7 +1180,7 @@ AutocompleteMatch HistoryURLProvider::HistoryMatchToACMatch(
        (inline_autocomplete_offset >= match.fill_into_edit.length()));
 
   size_t match_start = history_match.input_location;
-  match.contents = url_formatter::FormatUrl(info.url(), languages, format_types,
+  match.contents = url_formatter::FormatUrl(info.url(), format_types,
                                             net::UnescapeRule::SPACES, nullptr,
                                             nullptr, &match_start);
   if ((match_start != base::string16::npos) && autocomplete_offset_valid &&