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      1 // Copyright 2013 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef CHROME_BROWSER_PRECACHE_MOST_VISITED_URLS_PROVIDER_H_
      6 #define CHROME_BROWSER_PRECACHE_MOST_VISITED_URLS_PROVIDER_H_
      7 
      8 #include "base/basictypes.h"
      9 #include "base/compiler_specific.h"
     10 #include "base/memory/ref_counted.h"
     11 #include "components/precache/core/url_list_provider.h"
     12 
     13 namespace history {
     14 class TopSites;
     15 }
     16 
     17 namespace precache {
     18 
     19 // A URLListProvider that provides a list of the user's most visited URLs.
     20 class MostVisitedURLsProvider : public URLListProvider {
     21  public:
     22   explicit MostVisitedURLsProvider(history::TopSites* top_sites);
     23   ~MostVisitedURLsProvider();
     24 
     25   // Returns a list of the user's most visited URLs via a callback. May be
     26   // called from any thread. The callback may be run before the call to GetURLs
     27   // returns.
     28   virtual void GetURLs(const GetURLsCallback& callback) OVERRIDE;
     29 
     30  private:
     31   scoped_refptr<history::TopSites> top_sites_;
     32 
     33   DISALLOW_COPY_AND_ASSIGN(MostVisitedURLsProvider);
     34 };
     35 
     36 }  // namespace precache
     37 
     38 #endif  // CHROME_BROWSER_PRECACHE_MOST_VISITED_URLS_PROVIDER_H_
     39