Changes TopSites to access blacklist from prefs when necessary. I'm

chrome/browser/history/top_sites.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_HISTORY_TOP_SITES_H_
 #define CHROME_BROWSER_HISTORY_TOP_SITES_H_
 #pragma once
 
 #include <list>
 #include <set>
@@ skipping 356 matching lines @@
   // non-empty at startup. After we read the top sites from the DB, we'll
   // always have a cached list.
   PendingCallbackSet pending_callbacks_;
 
   // Stores thumbnails for unknown pages. When SetPageThumbnail is
   // called, if we don't know about that URL yet and we don't have
   // enough Top Sites (new profile), we store it until the next
   // SetTopSites call.
   TempImages temp_images_;
 
-  // Blacklisted and pinned URLs are stored in Preferences.
-
-  // Blacklisted URLs. They are filtered out from the list of Top
-  // Sites when GetMostVisitedURLs is called. Note that we are still
-  // storing all URLs, but filtering on access. It is a dictionary,
-  // key is the URL, value is a dummy value. This is owned by the
-  // PrefService.
-  const base::DictionaryValue* blacklist_;
-
   // This is a dictionary for the pinned URLs for the the most visited part of
   // the new tab page. Key is the URL, value is index where it is pinned at (may
   // be the same as key). This is owned by the PrefService.
   const base::DictionaryValue* pinned_urls_;
 
   // See description above HistoryLoadState.
   HistoryLoadState history_state_;
 
   // See description above TopSitesLoadState.
   TopSitesLoadState top_sites_state_;
 
   // Are we loaded?
   bool loaded_;
 
   DISALLOW_COPY_AND_ASSIGN(TopSites);
 };
 
 extern const TopSites::PrepopulatedPage kPrepopulatedPages[2];
 
 }  // namespace history
 
 #endif  // CHROME_BROWSER_HISTORY_TOP_SITES_H_