third_party/WebKit: fix typos found in comments

third_party/WebKit/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 208 matching lines @@
     updateWidgetInternal();
     if (m_isDelayingLoadEvent) {
         m_isDelayingLoadEvent = false;
         document().decrementLoadEventDelayCount();
     }
 }
 
 void HTMLPlugInElement::removedFrom(ContainerNode* insertionPoint)
 {
     // If we've persisted the plugin and we're removed from the tree then
-    // make sure we cleanup the persistance pointer.
+    // make sure we cleanup the persistence pointer.
     if (m_persistedPluginWidget) {
         HTMLFrameOwnerElement::UpdateSuspendScope suspendWidgetHierarchyUpdates;
         setPersistedPluginWidget(nullptr);
     }
     HTMLFrameOwnerElement::removedFrom(insertionPoint);
 }
 
 void HTMLPlugInElement::requestPluginCreationWithoutLayoutObjectIfPossible()
 {
     if (m_serviceType.isEmpty())
@@ skipping 423 matching lines @@
     return openShadowRoot();
 }
 
 void HTMLPlugInElement::lazyReattachIfNeeded()
 {
     if (!useFallbackContent() && needsWidgetUpdate() && layoutObject() && !isImageType())
         lazyReattachIfAttached();
 }
 
 }