Remove dependency of HistoryServiceFactory on ChromeBookmarkClientFactory

chrome/browser/history/chrome_history_client.h

 // Copyright 2014 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_CHROME_HISTORY_CLIENT_H_
 #define CHROME_BROWSER_HISTORY_CHROME_HISTORY_CLIENT_H_
 
+#include <set>
+
+#include "base/callback_forward.h"
+#include "base/callback_list.h"
 #include "base/macros.h"
+#include "base/memory/scoped_ptr.h"
+#include "components/bookmarks/browser/base_bookmark_model_observer.h"
 #include "components/history/core/browser/history_client.h"
 
+class GURL;
+
 namespace bookmarks {
 class BookmarkModel;
+class BookmarkNode;
 }
 
 // This class implements history::HistoryClient to abstract operations that
 // depend on Chrome environment.
-class ChromeHistoryClient : public history::HistoryClient {
+class ChromeHistoryClient : public history::HistoryClient,
+                            public bookmarks::BaseBookmarkModelObserver {
  public:
   explicit ChromeHistoryClient(bookmarks::BookmarkModel* bookmark_model);
   ~ChromeHistoryClient() override;
 
   // history::HistoryClient implementation.
+  void OnHistoryServiceCreated(
+      history::HistoryService* history_service) override;
   void Shutdown() override;
   bool CanAddURL(const GURL& url) override;
   void NotifyProfileError(sql::InitStatus init_status) override;
   scoped_ptr<history::HistoryBackendClient> CreateBackendClient() override;
 
  private:
+  // bookmarks::BaseBookmarkModelObserver implementation.
+  void BookmarkModelChanged() override;
+
+  // bookmarks::BookmarkModelObserver implementation.
+  void BookmarkNodeRemoved(bookmarks::BookmarkModel* bookmark_model,
+                           const bookmarks::BookmarkNode* parent,
+                           int old_index,
+                           const bookmarks::BookmarkNode* node,
+                           const std::set<GURL>& removed_url) override;
+  void BookmarkAllUserNodesRemoved(bookmarks::BookmarkModel* bookmark_model,
+                                   const std::set<GURL>& removed_urls) override;
+
   // BookmarkModel instance providing access to bookmarks. May be null during
   // testing but must outlive ChromeHistoryClient if non-null.
   bookmarks::BookmarkModel* bookmark_model_;
+  bool is_bookmark_model_observer_;
+
+  // Callback invoked when URLs are removed from BookmarkModel.
+  base::Callback<void(const std::set<GURL>&)> on_bookmarks_removed_;
+
+  // Subscription for notifications of changes to favicons.
+  scoped_ptr<base::CallbackList<void(const std::set<GURL>&)>::Subscription>
+      favicon_changed_subscription_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeHistoryClient);
 };
 
 #endif  // CHROME_BROWSER_HISTORY_CHROME_HISTORY_CLIENT_H_