Cleanup in components/search and chrome/browser/search

chrome/browser/ui/search/instant_search_prerenderer.h

 // Copyright 2013 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 CHROME_BROWSER_UI_SEARCH_INSTANT_SEARCH_PRERENDERER_H_
 #define CHROME_BROWSER_UI_SEARCH_INSTANT_SEARCH_PRERENDERER_H_
 
 #include <memory>
 
 #include "base/macros.h"
@@ skipping 72 matching lines @@
   // Returns true when prerendering is allowed for the given |source| and
   // |match|.
   bool IsAllowed(const AutocompleteMatch& match,
                  content::WebContents* source) const;
 
  private:
   friend class InstantSearchPrerendererTest;
 
   content::WebContents* prerender_contents() const;
 
-  // Returns true if the |query| matches the last prefetched search query or if
-  // the 'reuse_instant_search_base_page' flag is enabled in the field trials.
-  bool QueryMatchesPrefetch(const base::string16& query) const;
-
   Profile* const profile_;
 
   // Instant search base page URL.
   const GURL prerender_url_;
 
   std::unique_ptr<prerender::PrerenderHandle> prerender_handle_;
 
   InstantSuggestion last_instant_suggestion_;
 
   DISALLOW_COPY_AND_ASSIGN(InstantSearchPrerenderer);
 };
 
 #endif  // CHROME_BROWSER_UI_SEARCH_INSTANT_SEARCH_PRERENDERER_H_