Trigger spell check/remove markers if spell checker gets enabled/disabled.

Source/core/editing/Editor.h

 /*
  * Copyright (C) 2006, 2007, 2008 Apple 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:
  * 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 320 matching lines @@
     void revealSelectionAfterEditingOperation(const ScrollAlignment& = ScrollAlignment::alignCenterIfNeeded, RevealExtentOption = DoNotRevealExtent);
     void markMisspellingsOrBadGrammar(const VisibleSelection&, bool checkSpelling, RefPtr<Range>& firstMisspellingRange);
     TextCheckingTypeMask resolveTextCheckingTypeMask(TextCheckingTypeMask);
 
     void changeSelectionAfterCommand(const VisibleSelection& newSelection, FrameSelection::SetSelectionOptions);
     void notifyComponentsOnChangedSelection(const VisibleSelection& oldSelection, FrameSelection::SetSelectionOptions);
 
     Node* findEventTargetFromSelection() const;
 
     bool unifiedTextCheckerEnabled() const;
+
+    void markAllMisspellingsAndBadGrammarInRanges(TextCheckingTypeMask textCheckingMask, Range* checkingRange, Range* paragraphRange, bool asynchronous, int requestNumber, int* checkingLength = 0);
 };
 
 inline void Editor::setStartNewKillRingSequence(bool flag)
 {
     m_shouldStartNewKillRingSequence = flag;
 }
 
 inline const VisibleSelection& Editor::mark() const
 {
     return m_mark;
 }
 
 inline void Editor::setMark(const VisibleSelection& selection)
 {
     m_mark = selection;
 }
 
 inline bool Editor::markedTextMatchesAreHighlighted() const
 {
     return m_areMarkedTextMatchesHighlighted;
 }
 
 
 } // namespace WebCore
 
 #endif // Editor_h