Remove dependency on visitedlink from history

components/history/core/browser/visit_delegate.h

+// Copyright 2015 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 COMPONENTS_HISTORY_CORE_BROWSER_VISIT_DELEGATE_H_
+#define COMPONENTS_HISTORY_CORE_BROWSER_VISIT_DELEGATE_H_
+
+#include <vector>
+
+#include "base/macros.h"
+
+class GURL;
+class HistoryService;
+
+namespace history {
+
+// VisitDelegate gets notified about URLs recorded as visited by the
+// HistoryService.
+class VisitDelegate {
+ public:
+  VisitDelegate();
+  virtual ~VisitDelegate();
+
+  // Called once HistoryService initialization is complete. Returns true if the
+  // initialization succeeded, false otherwise.
+  virtual bool Init(HistoryService* history_service) = 0;
+
+  // Called when an URL is recorded by HistoryService.
+  virtual void AddURL(const GURL& url) = 0;
+
+  // Called when a list of URLs are recorded by HistoryService.
+  virtual void AddURLs(const std::vector<GURL>& urls) = 0;
+
+  // Called when a list of URLs are removed from HistoryService.
+  virtual void DeleteURLs(const std::vector<GURL>& urls) = 0;
+
+  // Called when all URLs are removed from HistoryService.
+  virtual void DeleteAllURLs() = 0;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(VisitDelegate);
+};
+
+}  // namespace history
+
+#endif  // COMPONENTS_HISTORY_CORE_BROWSER_VISIT_DELEGATE_H_