A working implementation of AQS (Assisted Query Stats).

chrome/browser/autocomplete/autocomplete_match.h

 // Copyright (c) 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_AUTOCOMPLETE_AUTOCOMPLETE_MATCH_H_
 #define CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_MATCH_H_
 #pragma once
 
 #include <vector>
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
+#include "chrome/browser/search_engines/template_url.h"
 #include "content/public/common/page_transition_types.h"
 #include "googleurl/src/gurl.h"
 
 class AutocompleteProvider;
 class Profile;
 class TemplateURL;
 
 // AutocompleteMatch ----------------------------------------------------------
 
 // A single result line with classified spans.  The autocomplete popup displays
@@ skipping 244 matching lines @@
   // accesses it must perform any necessary sanity checks before blindly using
   // it!
   string16 keyword;
 
   // True if the user has starred the destination URL.
   bool starred;
 
   // True if this match is from a previous result.
   bool from_previous;
 
+  // Optional search terms args.  If present,
+  // AutocompleteController::UpdateAssistedQueryStats() will incorporate this
+  // data with additional data it calculates and pass the completed struct to
+  // TemplateURLRef::ReplaceSearchTerms() to reset the match's |destination_url|
+  // after the complete set of matches in the AutocompleteResult has been chosen
+  // and sorted.  Most providers will leave this as NULL, which will cause the
+  // AutocompleteController to do no additional transformations.
+  scoped_ptr<TemplateURLRef::SearchTermsArgs> search_terms_args;
+
 #ifndef NDEBUG
   // Does a data integrity check on this match.
   void Validate() const;
 
   // Checks one text/classifications pair for valid values.
   void ValidateClassifications(
       const string16& text,
       const ACMatchClassifications& classifications) const;
 #endif
 };
 
 typedef AutocompleteMatch::ACMatchClassification ACMatchClassification;
 typedef std::vector<ACMatchClassification> ACMatchClassifications;
 
 #endif  // CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_MATCH_H_