Stop depending on InstantService from BaseSearchProvider

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 130 matching lines @@
 
 // Same as IsInstantNTP but uses |nav_entry| to determine the URL for the page
 // instead of using the visible entry.
 bool NavEntryIsInstantNTP(const content::WebContents* contents,
                           const content::NavigationEntry* nav_entry);
 
 // Returns the Instant URL of the default search engine. Returns an empty GURL
 // if the engine doesn't have an Instant URL, or if it shouldn't be used (say
 // because it doesn't satisfy the requirements for extended mode or if Instant
 // is disabled through preferences). Callers must check that the returned URL is
-// valid before using it. The value of |start_margin| is used for the "es_sm"
-// parameter in the URL. |force_instant_results| forces a search page to update
+// valid before using it. |force_instant_results| forces a search page to update
 // results incrementally even if that is otherwise disabled by google.com
 // preferences.
 // NOTE: This method expands the default search engine's instant_url template,
 // so it shouldn't be called from SearchTermsData or other such code that would
 // lead to an infinite recursion.
-GURL GetInstantURL(Profile* profile,
-                   int start_margin,
-                   bool force_instant_results);
+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 'prefetch_results' flag is set to true in field trials to
@@ skipping 124 matching lines @@
 GURL GetNewTabPageURL(Profile* profile);
 
 // Returns true if 'use_alternate_instant_url' flag is set to true in field
 // trials to use an alternate Instant search base page URL for prefetching
 // search results. This allows experimentation of Instant search.
 bool ShouldUseAltInstantURL();
 
 }  // namespace chrome
 
 #endif  // CHROME_BROWSER_SEARCH_SEARCH_H_