ExtensionShelf now uses the BookmarkExtensionBackground, just like the Bookma...

webkit/api/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 197 matching lines @@
 #if WEBKIT_USING_V8
         // Returns the V8 context for this frame, or an empty handle if there
         // is none.
         virtual v8::Local<v8::Context> mainWorldScriptContext() const = 0;
 #endif
 
 
         // Styling -------------------------------------------------------------
 
         // Insert the given text as a STYLE element at the beginning of the
-        // document.
-        virtual bool insertStyleText(const WebString&) = 0;
+        // document. |elementId| can be empty, but if specified then it is used
+        // as the id for the newly inserted element (replacing an existing one
+        // with the same id, if any).
+        virtual bool insertStyleText(const WebString& styleText,
+                                     const WebString& elementId) = 0;
 
 
         // Navigation ----------------------------------------------------------
 
         // Reload the current document.
         virtual void reload() = 0;
 
         // Load the given URL.
         virtual void loadRequest(const WebURLRequest&) = 0;
 
@@ skipping 205 matching lines @@
         // from the DOM.
         virtual WebString contentAsMarkup() const = 0;
 
     protected:
         ~WebFrame() { }
     };
 
 } // namespace WebKit
 
 #endif