Fix referrerPolicy IDL attribute spelling

third_party/WebKit/Source/core/html/HTMLAreaElement.idl

 /*
  * Copyright (C) 2006, 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Samuel Weinig <sam.weinig@gmail.com>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 10 matching lines @@
 // https://html.spec.whatwg.org/#the-area-element
 
 interface HTMLAreaElement : HTMLElement {
     [CEReactions, Reflect] attribute DOMString alt;
     [CEReactions, Reflect] attribute DOMString coords;
     [CEReactions, Reflect] attribute DOMString shape;
     [CEReactions, Reflect] attribute DOMString target;
     // FIXME: ping should be a DOMTokenList.
     [CEReactions, Reflect] attribute DOMString ping;
     // FIXME: download, rel, relList are missing
-    [CEReactions, Reflect, ReflectOnly=("","no-referrer","origin","no-referrer-when-downgrade","origin-when-cross-origin","unsafe-url"), ReflectMissing="", ReflectInvalid=""] attribute DOMString referrerpolicy;
+    [CEReactions, Reflect, ReflectOnly=("","no-referrer","origin","no-referrer-when-downgrade","origin-when-cross-origin","unsafe-url"), ReflectMissing="", ReflectInvalid=""] attribute DOMString referrerPolicy;
 
     // obsolete members
     // https://html.spec.whatwg.org/#HTMLAreaElement-partial
     [CEReactions, Reflect] attribute boolean noHref;
 };
 
 HTMLAreaElement implements HTMLHyperlinkElementUtils;