[NoStatePrefetch] Kill renderer after preload scanning

third_party/WebKit/Source/core/dom/Document.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2011, 2012 Apple Inc. All
  * rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved.
  * (http://www.torchmobile.com/)
  * Copyright (C) 2008, 2009, 2011, 2012 Google Inc. All rights reserved.
@@ skipping 223 matching lines @@
 #include "platform/scroll/ScrollbarTheme.h"
 #include "platform/text/PlatformLocale.h"
 #include "platform/text/SegmentedString.h"
 #include "platform/tracing/TraceEvent.h"
 #include "platform/weborigin/OriginAccessEntry.h"
 #include "platform/weborigin/SchemeRegistry.h"
 #include "platform/weborigin/SecurityOrigin.h"
 #include "public/platform/Platform.h"
 #include "public/platform/WebAddressSpace.h"
 #include "public/platform/WebFrameScheduler.h"
+#include "public/platform/WebPrerenderingSupport.h"
 #include "public/platform/WebScheduler.h"
 #include "wtf/AutoReset.h"
 #include "wtf/CurrentTime.h"
 #include "wtf/DateMath.h"
 #include "wtf/Functional.h"
 #include "wtf/HashFunctions.h"
 #include "wtf/PtrUtil.h"
 #include "wtf/StdLibExtras.h"
 #include "wtf/text/StringBuffer.h"
 #include "wtf/text/TextEncodingRegistry.h"
@@ skipping 1167 matching lines @@
 
 bool Document::isPrefetchOnly() const {
   if (!m_frame || !m_frame->page())
     return false;
 
   PrerendererClient* prerendererClient =
       PrerendererClient::from(m_frame->page());
   return prerendererClient && prerendererClient->isPrefetchOnly();
 }
 
+void Document::onPrefetchFinished() const {
+  WebPrerenderingSupport::current()->prefetchFinished();
+}
+
 String Document::visibilityState() const {
   return pageVisibilityStateString(pageVisibilityState());
 }
 
 bool Document::hidden() const {
   return pageVisibilityState() != PageVisibilityStateVisible;
 }
 
 void Document::didChangeVisibilityState() {
   dispatchEvent(Event::createBubble(EventTypeNames::visibilitychange));
@@ skipping 3695 matching lines @@
   // Schedule dropping of the ElementDataCache. We keep it alive for a while
   // after parsing finishes so that dynamically inserted content can also
   // benefit from sharing optimizations.  Note that we don't refresh the timer
   // on cache access since that could lead to huge caches being kept alive
   // indefinitely by something innocuous like JS setting .innerHTML repeatedly
   // on a timer.
   m_elementDataCacheClearTimer.startOneShot(10, BLINK_FROM_HERE);
 
   // Parser should have picked up all preloads by now
   m_fetcher->clearPreloads(ResourceFetcher::ClearSpeculativeMarkupPreloads);
+
+  if (isPrefetchOnly())
+    onPrefetchFinished();
 }
 
 void Document::elementDataCacheClearTimerFired(TimerBase*) {
   m_elementDataCache.clear();
 }
 
 void Document::beginLifecycleUpdatesIfRenderingReady() {
   if (!isActive())
     return;
   if (!isRenderingReady())
@@ skipping 1253 matching lines @@
 }
 
 void showLiveDocumentInstances() {
   WeakDocumentSet& set = liveDocumentSet();
   fprintf(stderr, "There are %u documents currently alive:\n", set.size());
   for (Document* document : set)
     fprintf(stderr, "- Document %p URL: %s\n", document,
             document->url().getString().utf8().data());
 }
 #endif