Remove LocalFrameLifecycleObserver::willDetachFrameHost()

third_party/WebKit/Source/core/frame/LocalDOMWindow.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 86 matching lines @@
         return new WindowFrameObserver(window, frame);
     }
 
     DEFINE_INLINE_VIRTUAL_TRACE()
     {
         visitor->trace(m_window);
         LocalFrameLifecycleObserver::trace(visitor);
     }
 
     // LocalFrameLifecycleObserver overrides:
-    void willDetachFrameHost() override
-    {
-        m_window->willDetachFrameHost();
-    }
-
     void contextDestroyed() override
     {
         m_window->frameDestroyed();
         LocalFrameLifecycleObserver::contextDestroyed();
     }
 
 private:
     WindowFrameObserver(LocalDOMWindow* window, LocalFrame& frame)
         : LocalFrameLifecycleObserver(&frame)
         , m_window(window)
@@ skipping 366 matching lines @@
 LocalDOMWindow* LocalDOMWindow::toLocalDOMWindow()
 {
     return this;
 }
 
 MediaQueryList* LocalDOMWindow::matchMedia(const String& media)
 {
     return document() ? document()->mediaQueryMatcher().matchMedia(media) : nullptr;
 }
 
-void LocalDOMWindow::willDetachFrameHost()
-{
-    frame()->host()->eventHandlerRegistry().didRemoveAllEventHandlers(*this);
-}
-
 void LocalDOMWindow::frameDestroyed()
 {
     willDestroyDocumentInFrame();
     resetLocation();
     m_properties.clear();
     removeAllEventListeners();
 }
 
 void LocalDOMWindow::willDestroyDocumentInFrame()
 {
@@ skipping 1046 matching lines @@
 {
     // If the LocalDOMWindow still has a frame reference, that frame must point
     // back to this LocalDOMWindow: otherwise, it's easy to get into a situation
     // where script execution leaks between different LocalDOMWindows.
     if (m_frameObserver->frame())
         ASSERT_WITH_SECURITY_IMPLICATION(m_frameObserver->frame()->domWindow() == this);
     return m_frameObserver->frame();
 }
 
 } // namespace blink