[NoStatePrefetch] Kill renderer after preload scanning

chrome/renderer/prerender/prerenderer_client.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_RENDERER_PRERENDER_PRERENDERER_CLIENT_H_
 #define CHROME_RENDERER_PRERENDER_PRERENDERER_CLIENT_H_
 
 #include "base/compiler_specific.h"
 #include "content/public/renderer/render_view_observer.h"
 #include "third_party/WebKit/public/web/WebPrerendererClient.h"
 
 namespace prerender {
 
 class PrerendererClient : public content::RenderViewObserver,
                           public blink::WebPrerendererClient {
  public:
   explicit PrerendererClient(content::RenderView* render_view);
 
  private:
   ~PrerendererClient() override;
 
   // RenderViewObserver implementation.
   void OnDestruct() override;
 
   // Implements blink::WebPrerendererClient
   void willAddPrerender(blink::WebPrerender* prerender) override;
   bool isPrefetchOnly() override;
+  void onPrefetchFinished() override;
 };
 
 }  // namespace prerender
 
 #endif  // CHROME_RENDERER_PRERENDER_PRERENDERER_CLIENT_H_