Remove search::ShouldPrerenderInstantUrlOnOmniboxFocus

chrome/browser/search/search.h

 // Copyright 2012 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_SEARCH_SEARCH_H_
 #define CHROME_BROWSER_SEARCH_SEARCH_H_
 
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 101 matching lines @@
 GURL GetInstantURL(Profile* profile, bool force_instant_results);
 
 // Returns URLs associated with the default search engine for |profile|.
 std::vector<GURL> GetSearchURLs(Profile* profile);
 
 // Returns the default search engine base page URL to prefetch search results.
 // Returns an empty URL if 'prefetch_results' flag is set to false in field
 // trials.
 GURL GetSearchResultPrefetchBaseURL(Profile* profile);
 
-// Returns true if 'prerender_instant_url_on_omnibox_focus' flag is enabled in
-// field trials to prerender Instant search base page when the omnibox is
-// focused.
-bool ShouldPrerenderInstantUrlOnOmniboxFocus();
 
 // Transforms the input |url| into its "effective URL". |url| must be an
 // Instant URL, i.e. ShouldAssignURLToInstantRenderer must return true. The
 // returned URL facilitates grouping process-per-site. The |url| is transformed,
 // for example, from
 //
 //   https://www.google.com/search?espv=1&q=tractors
 //
 // to the privileged URL
 //
@@ skipping 41 matching lines @@
 
 // Returns true if 'use_search_path_for_instant' flag is set to true in field
 // trials to use an '/search' path in an alternate Instant search base page URL
 // for prefetching search results. This allows experimentation of Instant
 // search.
 bool ShouldUseSearchPathForInstant();
 
 }  // namespace search
 
 #endif  // CHROME_BROWSER_SEARCH_SEARCH_H_