Add text field change handling for autofill preview in textarea element.

public/web/WebInputElement.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 59 matching lines @@
         BLINK_EXPORT bool isRadioButton() const;
         BLINK_EXPORT bool isCheckbox() const;
         BLINK_EXPORT bool autoComplete() const;
         BLINK_EXPORT int maxLength() const;
         BLINK_EXPORT bool isActivatedSubmit() const;
         BLINK_EXPORT void setActivatedSubmit(bool);
         BLINK_EXPORT int size() const;
         BLINK_EXPORT void setValue(const WebString&, bool sendChangeEvent = false);
         BLINK_EXPORT void setChecked(bool, bool sendChangeEvent = false);
         BLINK_EXPORT WebString value() const;
-        // This returns the non-sanitized, exact value inside the text field.
-        BLINK_EXPORT WebString editingValue() const;
         // Sets the value inside the text field without being sanitized.
         // Can't be used if a renderer doesn't exist or on a non text field type.
         // Caret will be moved to the end.
         BLINK_EXPORT void setEditingValue(const WebString&);
         BLINK_EXPORT void setSuggestedValue(const WebString&);
         BLINK_EXPORT WebString suggestedValue() const;
         BLINK_EXPORT void setSelectionRange(int, int);
-        BLINK_EXPORT int selectionStart() const;
-        BLINK_EXPORT int selectionEnd() const;
         BLINK_EXPORT bool isValidValue(const WebString&) const;
         BLINK_EXPORT bool isChecked() const;
         BLINK_EXPORT bool isMultiple() const;
 
         BLINK_EXPORT WebElementCollection dataListOptions() const;
 
         // Return the localized value for this input type.
         BLINK_EXPORT WebString localizeValue(const WebString&) const;
 
         BLINK_EXPORT bool isSpeechInputEnabled() const;
@@ skipping 23 matching lines @@
     BLINK_EXPORT WebInputElement* toWebInputElement(WebElement*);
 
     inline const WebInputElement* toWebInputElement(const WebElement* element)
     {
         return toWebInputElement(const_cast<WebElement*>(element));
     }
 
 } // namespace blink
 
 #endif