Remove PostAttachCallbacks and replace with something more specialized

Source/core/html/HTMLPlugInElement.cpp

 /**
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Stefan Schimanski (1Stein@gmx.de)
  * Copyright (C) 2004, 2005, 2006 Apple Computer, Inc.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
@@ skipping 11 matching lines @@
 
 #include "config.h"
 #include "core/html/HTMLPlugInElement.h"
 
 #include "CSSPropertyNames.h"
 #include "HTMLNames.h"
 #include "bindings/v8/ScriptController.h"
 #include "bindings/v8/npruntime_impl.h"
 #include "core/dom/Document.h"
 #include "core/dom/Node.h"
-#include "core/dom/PostAttachCallbacks.h"
 #include "core/dom/shadow/ShadowRoot.h"
 #include "core/events/Event.h"
 #include "core/frame/LocalFrame.h"
 #include "core/frame/csp/ContentSecurityPolicy.h"
 #include "core/html/HTMLContentElement.h"
 #include "core/html/HTMLImageLoader.h"
 #include "core/html/PluginDocument.h"
 #include "core/loader/FrameLoaderClient.h"
 #include "core/page/EventHandler.h"
 #include "core/page/Page.h"
@@ skipping 403 matching lines @@
     RefPtr<Widget> widget = frame->loader().client()->createPlugin(this, url, paramNames, paramValues, mimeType, loadManually, FrameLoaderClient::FailOnDetachedPlugin);
 
     if (!widget) {
         if (!renderer->showsUnavailablePluginIndicator())
             renderer->setPluginUnavailabilityReason(RenderEmbeddedObject::PluginMissing);
         return false;
     }
 
     renderer->setWidget(widget);
     document().setContainsPlugins();
-    setNeedsStyleRecalc(LocalStyleChange, StyleChangeFromRenderer);
+    scheduleLayerUpdate();
     return true;
 }
 
 bool HTMLPlugInElement::shouldUsePlugin(const KURL& url, const String& mimeType, bool hasFallback, bool& useFallback)
 {
     // Allow other plug-ins to win over QuickTime because if the user has
     // installed a plug-in that can handle TIFF (which QuickTime can also
     // handle) they probably intended to override QT.
     if (document().frame()->page() && (mimeType == "image/tiff" || mimeType == "image/tif" || mimeType == "image/x-tiff")) {
         const PluginData* pluginData = document().frame()->page()->pluginData();
@@ skipping 58 matching lines @@
     if (root.isOldestAuthorShadowRoot())
         lazyReattachIfAttached();
 }
 
 bool HTMLPlugInElement::useFallbackContent() const
 {
     return hasAuthorShadowRoot();
 }
 
 }