Implement the 'noopener' window feature.

third_party/WebKit/Source/core/page/CreateWindow.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 137 matching lines @@
     // so we need to ensure the proper referrer is set now.
     frameRequest.resourceRequest().setHTTPReferrer(SecurityPolicy::generateReferrer(activeFrame->document()->referrerPolicy(), completedURL, activeFrame->document()->outgoingReferrer()));
 
     // Records HasUserGesture before the value is invalidated inside createWindow(LocalFrame& openerFrame, ...).
     // This value will be set in ResourceRequest loaded in a new LocalFrame.
     bool hasUserGesture = UserGestureIndicator::processingUserGesture();
 
     // We pass the opener frame for the lookupFrame in case the active frame is different from
     // the opener frame, and the name references a frame relative to the opener frame.
     bool created;
-    Frame* newFrame = createWindow(*activeFrame, openerFrame, frameRequest, windowFeatures, NavigationPolicyIgnore, MaybeSetOpener, created);
+    ShouldSetOpener opener = windowFeatures.noopener ? NeverSetOpener : MaybeSetOpener;
+    Frame* newFrame = createWindow(*activeFrame, openerFrame, frameRequest, windowFeatures, NavigationPolicyIgnore, opener, created);
     if (!newFrame)
         return nullptr;
 
-    newFrame->client()->setOpener(&openerFrame);
+    if (!windowFeatures.noopener)
+        newFrame->client()->setOpener(&openerFrame);
 
     if (!newFrame->domWindow()->isInsecureScriptAccess(callingWindow, completedURL)) {
         if (!urlString.isEmpty() || created)
             newFrame->navigate(*callingWindow.document(), completedURL, false, hasUserGesture ? UserGestureStatus::Active : UserGestureStatus::None);
     }
     return newFrame->domWindow();
 }
 
 void createWindowForRequest(const FrameLoadRequest& request, LocalFrame& openerFrame, NavigationPolicy policy, ShouldSendReferrer shouldSendReferrer, ShouldSetOpener shouldSetOpener)
 {
@@ skipping 25 matching lines @@
     }
 
     // TODO(japhet): Form submissions on RemoteFrames don't work yet.
     FrameLoadRequest newRequest(0, request.resourceRequest());
     newRequest.setForm(request.form());
     if (newFrame->isLocalFrame())
         toLocalFrame(newFrame)->loader().load(newRequest);
 }
 
 } // namespace blink