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

third_party/WebKit/Source/web/WebFrame.cpp

Index: third_party/WebKit/Source/web/WebFrame.cpp
diff --git a/third_party/WebKit/Source/web/WebFrame.cpp b/third_party/WebKit/Source/web/WebFrame.cpp
index 372c36a18979dac5f91ae68e120378490ae173a6..6e6dd436cfb00dc7343ef45cb13c9a3cfdab12db 100644
--- a/third_party/WebKit/Source/web/WebFrame.cpp
+++ b/third_party/WebKit/Source/web/WebFrame.cpp
@@ -151,7 +151,8 @@ void WebFrame::setFrameOwnerProperties(
   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);
@@ -160,6 +161,7 @@ void WebFrame::setFrameOwnerProperties(
   owner->setMarginHeight(properties.marginHeight);
   owner->setAllowFullscreen(properties.allowFullscreen);
   owner->setAllowPaymentRequest(properties.allowPaymentRequest);
+  owner->setIsDisplayNone(properties.isDisplayNone);
   owner->setCsp(properties.requiredCsp);
   owner->setAllowedFeatures(properties.allowedFeatures);
 }