Implement the 'noopener' link relation.

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 282 matching lines @@
     return m_linkRelations & relation;
 }
 
 void HTMLAnchorElement::setRel(const AtomicString& value)
 {
     m_linkRelations = 0;
     SpaceSplitString newLinkRelations(value, SpaceSplitString::ShouldFoldCase);
     // FIXME: Add link relations as they are implemented
     if (newLinkRelations.contains("noreferrer"))
         m_linkRelations |= RelationNoReferrer;
+    if (newLinkRelations.contains("noopener"))
+        m_linkRelations |= RelationNoOpener;
 }
 
 const AtomicString& HTMLAnchorElement::name() const
 {
     return getNameAttribute();
 }
 
 short HTMLAnchorElement::tabIndex() const
 {
     // Skip the supportsFocus check in HTMLElement.
@@ skipping 51 matching lines @@
 
         frame->loader().client()->loadURLExternally(request, NavigationPolicyDownload, suggestedName, false);
     } else {
         request.setRequestContext(WebURLRequest::RequestContextHyperlink);
         FrameLoadRequest frameRequest(&document(), request, getAttribute(targetAttr));
         frameRequest.setTriggeringEvent(event);
         if (hasRel(RelationNoReferrer)) {
             frameRequest.setShouldSendReferrer(NeverSendReferrer);
             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";
 }
 
 bool isLinkClick(Event* event)
@@ skipping 19 matching lines @@
             Vector<String> argv;
             argv.append("a");
             argv.append(fastGetAttribute(hrefAttr));
             activityLogger->logEvent("blinkAddElement", argv.size(), argv.data());
         }
     }
     return HTMLElement::insertedInto(insertionPoint);
 }
 
 } // namespace blink