Factor out AutocompleteMatch creation from BookmarkProvider

components/bookmarks/browser/titled_url_index.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_BOOKMARKS_BROWSER_TITLED_URL_INDEX_H_
 #define COMPONENTS_BOOKMARKS_BROWSER_TITLED_URL_INDEX_H_
 
 #include <stddef.h>
 
 #include <map>
@@ skipping 11 matching lines @@
 class TitledUrlNodeSorter;
 struct TitledUrlMatch;
 
 // TitledUrlIndex maintains an index of paired titles and URLs for quick lookup.
 //
 // TitledUrlIndex maintains the index (index_) as a map of sets. The map (type
 // Index) maps from a lower case string to the set (type TitledUrlNodeSet) of
 // TitledUrlNodes that contain that string in their title or URL.
 class TitledUrlIndex {
  public:
+  // Constructs a TitledUrlIndex. |sorter| is used to construct a sorted list
+  // of matches when matches are returned from the index. If null, matches are
+  // returned unsorted.
   TitledUrlIndex(std::unique_ptr<TitledUrlNodeSorter> sorter);
   ~TitledUrlIndex();
 
   // Invoked when a title/URL pair has been added to the model.
   void Add(const TitledUrlNode* node);
 
   // Invoked when a title/URL pair has been removed from the model.
   void Remove(const TitledUrlNode* node);
 
   // Returns up to |max_count| of matches containing each term from the text
@@ skipping 40 matching lines @@
   Index index_;
 
   std::unique_ptr<TitledUrlNodeSorter> sorter_;
 
   DISALLOW_COPY_AND_ASSIGN(TitledUrlIndex);
 };
 
 }  // namespace bookmarks
 
 #endif  // COMPONENTS_BOOKMARKS_BROWSER_TITLED_URL_INDEX_H_