Abandon prerenders upon render thread shutdown.

third_party/WebKit/Source/web/WebKit.cpp

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 24 matching lines @@
 #include "bindings/core/v8/V8GCController.h"
 #include "bindings/core/v8/V8Initializer.h"
 #include "core/animation/AnimationClock.h"
 #include "core/page/Page.h"
 #include "gin/public/v8_platform.h"
 #include "modules/ModulesInitializer.h"
 #include "platform/LayoutTestSupport.h"
 #include "platform/Logging.h"
 #include "platform/heap/Heap.h"
 #include "public/platform/Platform.h"
+#include "public/platform/WebPrerenderingSupport.h"
 #include "public/platform/WebThread.h"
 #include "wtf/Assertions.h"
 #include "wtf/WTF.h"
 #include "wtf/allocator/Partitions.h"
 #include "wtf/text/AtomicString.h"
 #include "wtf/text/TextEncoding.h"
 #include <v8.h>
 
 namespace blink {
 
@@ skipping 48 matching lines @@
         // message loop, because the message loop is already destructed before
         // the shutdown() is called.
         delete s_endOfTaskRunner;
         s_endOfTaskRunner = nullptr;
     }
 
     V8Initializer::shutdownMainThread();
 
     modulesInitializer().shutdown();
 
+    if (WebPrerenderingSupport* prerender = WebPrerenderingSupport::current())
+        prerender->detachRenderer();
+
     Platform::shutdown();
 }
 
 v8::Isolate* mainThreadIsolate()
 {
     return V8PerIsolateData::mainThreadIsolate();
 }
 
 // TODO(tkent): The following functions to wrap LayoutTestSupport should be
 // moved to public/platform/.
@@ skipping 47 matching lines @@
     DCHECK(!reloadPages);
     Page::refreshPlugins();
 }
 
 void decommitFreeableMemory()
 {
     WTF::Partitions::decommitFreeableMemory();
 }
 
 } // namespace blink