Remove a variety of no-longer-used query params.

ios/chrome/browser/autocomplete/autocomplete_provider_client_impl.h

 // Copyright 2015 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.
 
 #ifndef IOS_CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_PROVIDER_CLIENT_IMPL_H_
 #define IOS_CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_PROVIDER_CLIENT_IMPL_H_
 
 #include "base/macros.h"
 #include "components/omnibox/browser/autocomplete_provider_client.h"
 #include "ios/chrome/browser/autocomplete/autocomplete_scheme_classifier_impl.h"
@@ skipping 27 matching lines @@
   scoped_refptr<ShortcutsBackend> GetShortcutsBackend() override;
   scoped_refptr<ShortcutsBackend> GetShortcutsBackendIfExists() override;
   scoped_ptr<KeywordExtensionsDelegate> GetKeywordExtensionsDelegate(
       KeywordProvider* keyword_provider) override;
   std::string GetAcceptLanguages() const override;
   std::string GetEmbedderRepresentationOfAboutScheme() override;
   std::vector<base::string16> GetBuiltinURLs() override;
   std::vector<base::string16> GetBuiltinsToProvideAsUserTypes() override;
   bool IsOffTheRecord() const override;
   bool SearchSuggestEnabled() const override;
-  bool BookmarkBarIsVisible() const override;
   bool TabSyncEnabledAndUnencrypted() const override;
   void Classify(
       const base::string16& text,
       bool prefer_keyword,
       bool allow_exact_keyword_match,
       metrics::OmniboxEventProto::PageClassification page_classification,
       AutocompleteMatch* match,
       GURL* alternate_nav_url) override;
   void DeleteMatchingURLsForKeywordFromHistory(
       history::KeywordID keyword_id,
       const base::string16& term) override;
   void PrefetchImage(const GURL& url) override;
   void OnAutocompleteControllerResultReady(
       AutocompleteController* controller) override;
 
  private:
   ios::ChromeBrowserState* browser_state_;
   AutocompleteSchemeClassifierImpl scheme_classifier_;
   ios::UIThreadSearchTermsData search_terms_data_;
 
   DISALLOW_COPY_AND_ASSIGN(AutocompleteProviderClientImpl);
 };
 
 #endif  // IOS_CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_PROVIDER_CLIENT_IMPL_H_