[Reland #1] Don't create layout objects for children of display-none iframes.

third_party/WebKit/Source/web/WebFrame.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "public/web/WebFrame.h"
 
 #include "bindings/core/v8/WindowProxyManager.h"
 #include "core/HTMLNames.h"
 #include "core/frame/FrameHost.h"
 #include "core/frame/FrameView.h"
@@ skipping 136 matching lines @@
   // for frames with a remote owner.
   RemoteFrameOwner* owner = toRemoteFrameOwner(toImplBase()->frame()->owner());
   DCHECK(owner);
 
   Frame* frame = toImplBase()->frame();
   DCHECK(frame);
 
   if (frame->isLocalFrame()) {
     toLocalFrame(frame)->document()->willChangeFrameOwnerProperties(
         properties.marginWidth, properties.marginHeight,
-        static_cast<ScrollbarMode>(properties.scrollingMode));
+        static_cast<ScrollbarMode>(properties.scrollingMode),
+        properties.isDisplayNone);
   }
 
   owner->setBrowsingContextContainerName(properties.name);
   owner->setScrollingMode(properties.scrollingMode);
   owner->setMarginWidth(properties.marginWidth);
   owner->setMarginHeight(properties.marginHeight);
   owner->setAllowFullscreen(properties.allowFullscreen);
   owner->setAllowPaymentRequest(properties.allowPaymentRequest);
+  owner->setIsDisplayNone(properties.isDisplayNone);
   owner->setCsp(properties.requiredCsp);
   owner->setDelegatedpermissions(properties.delegatedPermissions);
   owner->setAllowedFeatures(properties.allowedFeatures);
 }
 
 WebFrame* WebFrame::opener() const {
   return m_opener;
 }
 
 void WebFrame::setOpener(WebFrame* opener) {
@@ skipping 137 matching lines @@
   for (WebFrame* child = frame->firstChild(); child;
        child = child->nextSibling())
     traceFrame(visitor, child);
 }
 
 void WebFrame::close() {
   m_openedFrameTracker->dispose();
 }
 
 }  // namespace blink