Write thumbnail to the database on SetPageThumbnail....

chrome/browser/history/top_sites.h

 // Copyright (c) 2009 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_HISTORY_TOP_SITES_H_
 #define CHROME_BROWSER_HISTORY_TOP_SITES_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 73 matching lines @@
 
  private:
   friend class base::RefCountedThreadSafe<TopSites>;
   friend class TopSitesTest;
   friend class TopSitesTest_GetMostVisited_Test;
   friend class TopSitesTest_RealDatabase_Test;
   friend class TopSitesTest_MockDatabase_Test;
 
   ~TopSites();
 
-  // Called by the public SetPageThumbnail. Takes RefCountedBytes
-  // rather than a SkBitmap.
-  bool SetPageThumbnail(const GURL& url,
-                        const RefCountedBytes* thumbnail_data,
-                        const ThumbnailScore& score);
+  // Sets the thumbnail without writing to the database. Useful when
+  // reading last known top sites from the DB.
+  // Returns true if the thumbnail was set, false if the existing one is better.
+  bool SetPageThumbnailNoDB(const GURL& url,
+                            const RefCountedBytes* thumbnail_data,
+                            const ThumbnailScore& score);
 
   void StartQueryForMostVisited();
 
   // Handler for the query response.
   void OnTopSitesAvailable(CancelableRequestProvider::Handle handle,
                            MostVisitedURLList data);
 
   // Updates the top sites list and writes the difference to disk.
   void UpdateMostVisited(MostVisitedURLList* most_visited);
   // Saves the set of the top URLs visited by this user. The 0th item is the
@@ skipping 67 matching lines @@
 
   // TODO(brettw): use the blacklist.
   // std::set<GURL> blacklist_;
 
   DISALLOW_COPY_AND_ASSIGN(TopSites);
 };
 
 }  // namespace history
 
 #endif  // CHROME_BROWSER_HISTORY_TOP_SITES_H_