[InputEvent] Change |getTargetRanges()| to return current selection by default

third_party/WebKit/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 150 matching lines @@
     int idForHistogram() const;
 
    private:
     LocalFrame& frame() const {
       DCHECK(m_frame);
       return *m_frame;
     }
 
     // Returns target ranges for the command, currently only supports delete
     // related commands. Used by InputEvent.
-    RangeVector* getTargetRanges() const;
+    const RangeVector* getTargetRanges() const;
 
     const EditorInternalCommand* m_command;
     EditorCommandSource m_source;
     Member<LocalFrame> m_frame;
   };
   Command createCommand(
       const String&
           commandName);  // Command source is CommandFromMenuOrKeyBinding.
   Command createCommand(const String& commandName, EditorCommandSource);
 
@@ skipping 200 matching lines @@
   m_typingStyle.clear();
 }
 
 inline void Editor::setTypingStyle(EditingStyle* style) {
   m_typingStyle = style;
 }
 
 }  // namespace blink
 
 #endif  // Editor_h