Componentize visitedlinks to src/components/visitedlink

chrome/renderer/visitedlink_slave.h

-// Copyright (c) 2011 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_RENDERER_VISITEDLINK_SLAVE_H_
-#define CHROME_RENDERER_VISITEDLINK_SLAVE_H_
-
-#include "base/compiler_specific.h"
-#include "base/shared_memory.h"
-#include "chrome/common/visitedlink_common.h"
-#include "content/public/renderer/render_process_observer.h"
-
-// Reads the link coloring database provided by the master. There can be any
-// number of slaves reading the same database.
-class VisitedLinkSlave : public VisitedLinkCommon,
-                         public content::RenderProcessObserver {
- public:
-  VisitedLinkSlave();
-  virtual ~VisitedLinkSlave();
-
-  // RenderProcessObserver implementation.
-  virtual bool OnControlMessageReceived(const IPC::Message& message) OVERRIDE;
-
-  // Message handlers.
-  void OnUpdateVisitedLinks(base::SharedMemoryHandle table);
-  void OnAddVisitedLinks(const VisitedLinkSlave::Fingerprints& fingerprints);
-  void OnResetVisitedLinks();
- private:
-  void FreeTable();
-
-  // shared memory consists of a SharedHeader followed by the table
-  base::SharedMemory* shared_memory_;
-
-  DISALLOW_COPY_AND_ASSIGN(VisitedLinkSlave);
-};
-
-#endif  // CHROME_RENDERER_VISITEDLINK_SLAVE_H_