Add support for setting password value gated on user's gesture in a page

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 83 matching lines @@
 
         // Exposes the default value of the maxLength attribute.
         BLINK_EXPORT static int defaultMaxLength();
 
         BLINK_EXPORT WebElement decorationElementFor(void*);
         BLINK_EXPORT WebElement passwordGeneratorButtonElement() const;
 
         // If true, forces the text of the element to be visible.
         BLINK_EXPORT void setShouldRevealPassword(bool value);
 
+        // Saves the value to be set as soon as the page registered a user gesture since the last load.
+        BLINK_EXPORT void setValueAfterUserGesture(const WebString&);
+
 #if BLINK_IMPLEMENTATION
         WebInputElement(const WTF::PassRefPtr<WebCore::HTMLInputElement>&);
         WebInputElement& operator=(const WTF::PassRefPtr<WebCore::HTMLInputElement>&);
         operator WTF::PassRefPtr<WebCore::HTMLInputElement>() const;
 #endif
     };
 
     BLINK_EXPORT WebInputElement* toWebInputElement(WebElement*);
 
     inline const WebInputElement* toWebInputElement(const WebElement* element)
     {
         return toWebInputElement(const_cast<WebElement*>(element));
     }
 
 } // namespace blink
 
 #endif