WebRange-ify WebWidget::compositionRange.

third_party/WebKit/public/web/WebWidget.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 151 matching lines @@
 
     // Called to inform the WebWidget to confirm an ongoing composition with a
     // new composition text. If the text is empty then the current composition
     // text is confirmed. If there is no ongoing composition, then deletes the
     // current selection and inserts the text. This method has no effect if
     // there is no ongoing composition and the text is empty.
     // Returns true if there is an ongoing composition or the text is inserted.
     virtual bool confirmComposition(const WebString& text) { return false; }
 
     // Fetches the character range of the current composition, also called the
-    // "marked range." Returns true and fills the out-paramters on success;
-    // returns false on failure.
-    virtual bool compositionRange(size_t* location, size_t* length) { return false; }
+    // "marked range."
+    virtual WebRange compositionRange() { return WebRange(); }
 
     // Returns information about the current text input of this WebWidget.
     // Note that this query can be expensive for long fields, as it returns the
     // plain-text representation of the current editable element. Consider using
     // the lighter-weight textInputType() when appropriate.
     virtual WebTextInputInfo textInputInfo() { return WebTextInputInfo(); }
 
     // Returns the type of current text input of this WebWidget.
     virtual WebTextInputType textInputType() { return WebTextInputTypeNone; }
 
@@ skipping 68 matching lines @@
     // Applies the range from |start| to |start + length| on the foucsed frame so that the text will later be replaced.
     virtual void applyReplacementRange(int start, int length) {}
 
 protected:
     ~WebWidget() { }
 };
 
 } // namespace blink
 
 #endif