[NoStatePrefetch] Kill renderer after preload scanning

chrome/renderer/prerender/prerender_helper.h

Index: chrome/renderer/prerender/prerender_helper.h
diff --git a/chrome/renderer/prerender/prerender_helper.h b/chrome/renderer/prerender/prerender_helper.h
index abc047d54429df6f687645a8c405b697a8c4df37..44d54441fdc48e47e01bb08312abbf4823b3d210 100644
--- a/chrome/renderer/prerender/prerender_helper.h
+++ b/chrome/renderer/prerender/prerender_helper.h
@@ -35,6 +35,10 @@ class PrerenderHelper
   static PrerenderMode GetPrerenderMode(
       const content::RenderFrame* render_frame);
 
+  // Sends an IPC to notify that the prefether requested the last resource it
+  // could find.
+  static void SendPrefetchFinished(content::RenderFrame* render_frame);
+
  private:
   // RenderFrameObserver implementation.
   bool OnMessageReceived(const IPC::Message& message) override;