[InputEvent] Fill |data| field for 'input' event InsertText

third_party/WebKit/Source/core/editing/commands/EditCommand.h

 /*
  * Copyright (C) 2005, 2006, 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 37 matching lines @@
     const VisibleSelection& startingSelection() const { return m_startingSelection; }
     const VisibleSelection& endingSelection() const { return m_endingSelection; }
 
     virtual bool isSimpleEditCommand() const { return false; }
     virtual bool isCompositeEditCommand() const { return false; }
     bool isTopLevelCommand() const { return !m_parent; }
 
     // The |EditingState*| argument must not be nullptr.
     virtual void doApply(EditingState*) = 0;
 
+    // |TypingCommand| will return the text of the last |m_commands|.
+    virtual String textDataForInputEvent() const;
+
     DECLARE_VIRTUAL_TRACE();
 
 protected:
     explicit EditCommand(Document&);
 
     Document& document() const { return *m_document.get(); }
     CompositeEditCommand* parent() const { return m_parent; }
     void setStartingSelection(const VisibleSelection&);
     void setEndingSelection(const VisibleSelection&);
     void setEndingSelection(const VisiblePosition&);
@@ skipping 25 matching lines @@
 
 private:
     bool isSimpleEditCommand() const final { return true; }
 };
 
 DEFINE_TYPE_CASTS(SimpleEditCommand, EditCommand, command, command->isSimpleEditCommand(), command.isSimpleEditCommand());
 
 } // namespace blink
 
 #endif // EditCommand_h