Simplify FaviconDriverImpl by removing extra FaviconHandler member.

components/favicon/core/favicon_driver_impl.h

Index: components/favicon/core/favicon_driver_impl.h
diff --git a/components/favicon/core/favicon_driver_impl.h b/components/favicon/core/favicon_driver_impl.h
index f4a93d643b00fcf687e7677c4526b6942f0970c1..bb6d2cf3bbfee7bcb7f77c70646f50efb55f3511 100644
--- a/components/favicon/core/favicon_driver_impl.h
+++ b/components/favicon/core/favicon_driver_impl.h
@@ -83,12 +83,10 @@ class FaviconDriverImpl : public FaviconDriver {
   history::HistoryService* history_service_;
   bookmarks::BookmarkModel* bookmark_model_;
 
-  // FaviconHandlers used to download the different kind of favicons. Both
-  // |touch_icon_handler_| and |large_icon_handler_| may be null depending
-  // on the platform or variations.
+  // FaviconHandlers used to download the different kind of favicons. The
+  // |touch_icon_handler_| may be null depending on the platform and variations.
   scoped_ptr<FaviconHandler> favicon_handler_;
   scoped_ptr<FaviconHandler> touch_icon_handler_;
-  scoped_ptr<FaviconHandler> large_icon_handler_;
 
   DISALLOW_COPY_AND_ASSIGN(FaviconDriverImpl);
 };