Don't autocomplete searches of >1 word if they've only been visited once and the user has not yet...

chrome/browser/autocomplete/history_quick_provider.h

 // Copyright (c) 2011 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_HISTORY_QUICK_PROVIDER_H_
 #define CHROME_BROWSER_AUTOCOMPLETE_HISTORY_QUICK_PROVIDER_H_
 #pragma once
 
 #include <string>
 
@@ skipping 27 matching lines @@
   virtual void DeleteMatch(const AutocompleteMatch& match) OVERRIDE;
 
   // Performs the autocomplete matching and scoring.
   void DoAutocomplete();
 
  private:
   friend class HistoryQuickProviderTest;
   FRIEND_TEST_ALL_PREFIXES(HistoryQuickProviderTest, Spans);
   FRIEND_TEST_ALL_PREFIXES(HistoryQuickProviderTest, Relevance);
 
+  // The initial maximum allowable score for a match which cannot be inlined.
+  static const int kMaxNonInliningScore;
+
   // Creates an AutocompleteMatch from |history_match|. |max_match_score| gives
   // the maximum possible score for the match.
   AutocompleteMatch QuickMatchToACMatch(
       const history::ScoredHistoryMatch& history_match,
       bool prevent_inline_autocomplete,
       int* max_match_score);
 
   // Determines the relevance score of |history_match|. The maximum allowed
   // score for the match is passed in |max_match_score|. The |max_match_score|
   // is always set to the resulting score minus 1 whenever the match's score
@@ skipping 16 matching lines @@
   // Only for use in unittests.  Takes ownership of |index|.
   void SetIndexForTesting(history::InMemoryURLIndex* index);
   AutocompleteInput autocomplete_input_;
   std::string languages_;
 
   // Only used for testing.
   scoped_ptr<history::InMemoryURLIndex> index_for_testing_;
 };
 
 #endif  // CHROME_BROWSER_AUTOCOMPLETE_HISTORY_QUICK_PROVIDER_H_