chrome/browser/prerender/prerender_tab_helper.h

// Copyright (c) 2012 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_PRERENDER_PRERENDER_TAB_HELPER_H_
#define CHROME_BROWSER_PRERENDER_PRERENDER_TAB_HELPER_H_

#include "base/macros.h"
#include "content/public/browser/web_contents_observer.h"
#include "content/public/browser/web_contents_user_data.h"

namespace prerender {

class PrerenderManager;

// Notifies the PrerenderManager with the events happening in the prerendered
// WebContents.
class PrerenderTabHelper
    : public content::WebContentsObserver,
      public content::WebContentsUserData<PrerenderTabHelper> {
 public:
  ~PrerenderTabHelper() override;
  PrerenderTabHelper(const PrerenderTabHelper&) = delete;
  PrerenderTabHelper& operator=(const PrerenderTabHelper&) = delete;

  // content::WebContentsObserver implementation.
  void DidFinishNavigation(
      content::NavigationHandle* navigation_handle) override;

 private:
  explicit PrerenderTabHelper(content::WebContents* web_contents);
  friend class content::WebContentsUserData<PrerenderTabHelper>;

  WEB_CONTENTS_USER_DATA_KEY_DECL();
};

}  // namespace prerender

#endif  // CHROME_BROWSER_PRERENDER_PRERENDER_TAB_HELPER_H_