Remove NOTIFICATION_HISTORY_URLS_DELETED

chrome/browser/history/top_sites_impl.h

 // Copyright (c) 2013 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_IMPL_H_
 #define CHROME_BROWSER_HISTORY_TOP_SITES_IMPL_H_
 
 #include <list>
 #include <set>
 #include <string>
 #include <utility>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "base/gtest_prod_util.h"
 #include "base/memory/ref_counted.h"
+#include "base/scoped_observer.h"
 #include "base/synchronization/lock.h"
 #include "base/task/cancelable_task_tracker.h"
 #include "base/time/time.h"
 #include "base/timer/timer.h"
 #include "chrome/browser/history/history_service.h"
 #include "chrome/browser/history/top_sites.h"
 #include "chrome/browser/history/top_sites_backend.h"
+#include "components/history/core/browser/history_service_observer.h"
 #include "components/history/core/browser/history_types.h"
 #include "components/history/core/browser/page_usage_data.h"
 #include "components/history/core/common/thumbnail_score.h"
 #include "third_party/skia/include/core/SkColor.h"
 #include "ui/gfx/image/image.h"
 #include "url/gurl.h"
 
 class Profile;
 
 namespace base {
 class FilePath;
 class RefCountedBytes;
 class RefCountedMemory;
 }
 
 namespace history {
 
 class TopSitesCache;
 class TopSitesImplTest;
 
 // This class allows requests for most visited urls and thumbnails on any
 // thread. All other methods must be invoked on the UI thread. All mutations
 // to internal state happen on the UI thread and are scheduled to update the
 // db using TopSitesBackend.
-class TopSitesImpl : public TopSites {
+class TopSitesImpl : public TopSites, public HistoryServiceObserver {
  public:
   explicit TopSitesImpl(Profile* profile);
 
   // Initializes TopSitesImpl.
   void Init(const base::FilePath& db_name);
 
   bool SetPageThumbnail(const GURL& url,
                         const gfx::Image& thumbnail,
                         const ThumbnailScore& score) override;
   bool SetPageThumbnailToJPEGBytes(const GURL& url,
@@ skipping 143 matching lines @@
   void RestartQueryForTopSitesTimer(base::TimeDelta delta);
 
   // Callback from TopSites with the top sites/thumbnails. Should be called
   // from the UI thread.
   void OnGotMostVisitedThumbnails(
       const scoped_refptr<MostVisitedThumbnails>& thumbnails);
 
   // Called when history service returns a list of top URLs.
   void OnTopSitesAvailableFromHistory(const MostVisitedURLList* data);
 
+  // history::HistoryServiceObserver:
+  void OnURLsDeleted(
+      HistoryService* history_service,
+      const history::URLsDeletedDetails& deleted_details) override;
+  void HistoryServiceBeingDeleted(HistoryService* history_service) override;
+
   scoped_refptr<TopSitesBackend> backend_;
 
   // The top sites data.
   scoped_ptr<TopSitesCache> cache_;
 
   // Copy of the top sites data that may be accessed on any thread (assuming
   // you hold |lock_|). The data in |thread_safe_cache_| has blacklisted and
   // pinned urls applied (|cache_| does not).
   scoped_ptr<TopSitesCache> thread_safe_cache_;
 
@@ skipping 27 matching lines @@
   // enough Top Sites (new profile), we store it until the next
   // SetNonForcedTopSites call.
   TempImages temp_images_;
 
   // URL List of prepopulated page.
   std::vector<GURL> prepopulated_page_urls_;
 
   // Are we loaded?
   bool loaded_;
 
+  ScopedObserver<HistoryService, HistoryServiceObserver>
+      history_service_observer_;
+
   DISALLOW_COPY_AND_ASSIGN(TopSitesImpl);
 };
 
 }  // namespace history
 
 #endif  // CHROME_BROWSER_HISTORY_TOP_SITES_IMPL_H_