Enable removing spelling markers in a frame

Source/WebKit/chromium/public/WebFrame.h

 /*
  * Copyright (C) 2009 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 420 matching lines @@
     // commands.
     virtual bool executeCommand(const WebString&, const WebNode& = WebNode()) = 0;
     virtual bool executeCommand(const WebString&, const WebString& value) = 0;
     virtual bool isCommandEnabled(const WebString&) const = 0;
 
     // Spell-checking support.
     virtual void enableContinuousSpellChecking(bool) = 0;
     virtual bool isContinuousSpellCheckingEnabled() const = 0;
     virtual void requestTextChecking(const WebElement&) = 0;
     virtual void replaceMisspelledRange(const WebString&) = 0;
+    virtual void removeSpellingMarkers() = 0;
 
     // Selection -----------------------------------------------------------
 
     virtual bool hasSelection() const = 0;
 
     virtual WebRange selectionRange() const = 0;
 
     virtual WebString selectionAsText() const = 0;
     virtual WebString selectionAsMarkup() const = 0;
 
@@ skipping 202 matching lines @@
     // text form. This is used only by layout tests.
     virtual WebString layerTreeAsText(bool showDebugInfo = false) const = 0;
 
 protected:
     ~WebFrame() { }
 };
 
 } // namespace WebKit
 
 #endif