Cleanup: Remove for_search param from search::InstantExtendedEnabledParam()

components/search_engines/search_terms_data.h

 // Copyright 2014 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 COMPONENTS_SEARCH_ENGINES_SEARCH_TERMS_DATA_H_
 #define COMPONENTS_SEARCH_ENGINES_SEARCH_TERMS_DATA_H_
 
 #include <string>
 
 #include "base/compiler_specific.h"
@@ skipping 31 matching lines @@
   // requests.  See GetSuggestRequestIdentifier() for more details.
   // This implementation returns the empty string.
   virtual std::string GetSuggestClient() const;
 
   // The suggest request identifier parameter ("gs_ri") passed with Google
   // suggest requests.   Along with suggestclient (See GetSuggestClient()),
   // this parameter controls what suggestion results are returned.
   // This implementation returns the empty string.
   virtual std::string GetSuggestRequestIdentifier() const;
 
-  // Returns a string indicating whether InstantExtended is enabled.
-  virtual std::string InstantExtendedEnabledParam(bool for_search) const;
+  // Returns a string indicating whether InstantExtended is enabled, suitable
+  // for adding as a query string param to the homepage or search requests.
+  virtual std::string InstantExtendedEnabledParam() const;
 
   // Returns a string that will cause the search results page to update
   // incrementally.
   virtual std::string ForceInstantResultsParam(bool for_prerender) const;
 
   // Returns the value to use for replacements of type
   // GOOGLE_IMAGE_SEARCH_SOURCE.
   virtual std::string GoogleImageSearchSource() const;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(SearchTermsData);
 };
 
 #endif  // COMPONENTS_SEARCH_ENGINES_SEARCH_TERMS_DATA_H_