Only simulate click for non-repeat Enter keydown on <a>

third_party/WebKit/Source/core/html/HTMLAnchorElement.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Simon Hausmann <hausmann@kde.org>
  * Copyright (C) 2003, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
  *           (C) 2006 Graham Dennis (graham.dennis@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
@@ skipping 350 matching lines @@
             frameRequest.setShouldSetOpener(NeverSetOpener);
         }
         if (hasRel(RelationNoOpener))
             frameRequest.setShouldSetOpener(NeverSetOpener);
         frame->loader().load(frameRequest);
     }
 }
 
 bool isEnterKeyKeydownEvent(Event* event)
 {
-    return event->type() == EventTypeNames::keydown && event->isKeyboardEvent() && toKeyboardEvent(event)->keyIdentifier() == "Enter";
+    return event->type() == EventTypeNames::keydown && event->isKeyboardEvent() && toKeyboardEvent(event)->keyIdentifier() == "Enter" && !toKeyboardEvent(event)->repeat();
 }
 
 bool isLinkClick(Event* event)
 {
     return event->type() == EventTypeNames::click && (!event->isMouseEvent() || toMouseEvent(event)->button() != RightButton);
 }
 
 bool HTMLAnchorElement::willRespondToMouseClickEvents()
 {
     return isLink() || HTMLElement::willRespondToMouseClickEvents();
 }
 
 bool HTMLAnchorElement::isInteractiveContent() const
 {
     return isLink();
 }
 
 Node::InsertionNotificationRequest HTMLAnchorElement::insertedInto(ContainerNode* insertionPoint)
 {
     InsertionNotificationRequest request = HTMLElement::insertedInto(insertionPoint);
     logAddElementIfIsolatedWorldAndInDocument("a", hrefAttr);
     return request;
 }
 
 } // namespace blink