Remove WebPrerenderingSupport::shutdown from blink::shutdown

third_party/WebKit/Source/platform/exported/Platform.cpp

 /*
  * Copyright (C) 2012 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 108 matching lines @@
         s_gcTaskRunner = nullptr;
     }
 
     // Detach the main thread before starting the shutdown sequence
     // so that the main thread won't get involved in a GC during the shutdown.
     ThreadState::detachMainThread();
 
     Heap::shutdown();
 
     WTF::shutdown();
-    WebPrerenderingSupport::shutdown();
     WTF::Partitions::shutdown();
 
     s_platform->m_mainThread = nullptr;
     s_platform = nullptr;
 }
 
 void Platform::setCurrentPlatformForTesting(Platform* platform)
 {
     ASSERT(platform);
     s_platform = platform;
@@ skipping 33 matching lines @@
     ProviderToAdapterMap::iterator it = memoryDumpProviders().find(provider);
     if (it == memoryDumpProviders().end())
         return;
     WebMemoryDumpProviderAdapter* adapter = it->value.get();
     base::trace_event::MemoryDumpManager::GetInstance()->UnregisterDumpProvider(adapter);
     adapter->set_is_registered(false);
     memoryDumpProviders().remove(it);
 }
 
 } // namespace blink