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

chrome/browser/history/top_sites.h

Index: chrome/browser/history/top_sites.h
diff --git a/chrome/browser/history/top_sites.h b/chrome/browser/history/top_sites.h
index 0d57432176351156b0cbd1c1a2f7614cf7e367b5..260767c7b29403e7196487e1262f17311d01d4a1 100644
--- a/chrome/browser/history/top_sites.h
+++ b/chrome/browser/history/top_sites.h
@@ -374,15 +374,6 @@ class TopSites
   // 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.