Don't create layout objects for children of display-none iframes.

third_party/WebKit/Source/web/WebLocalFrameImpl.cpp

Index: third_party/WebKit/Source/web/WebLocalFrameImpl.cpp
diff --git a/third_party/WebKit/Source/web/WebLocalFrameImpl.cpp b/third_party/WebKit/Source/web/WebLocalFrameImpl.cpp
index d49378a7512432b6c32187f492ecd4cb95e46135..c41894d3842253dc05798b631a62cfafe4183d3d 100644
--- a/third_party/WebKit/Source/web/WebLocalFrameImpl.cpp
+++ b/third_party/WebKit/Source/web/WebLocalFrameImpl.cpp
@@ -1590,7 +1590,8 @@ LocalFrame* WebLocalFrameImpl::createChildFrame(
   WebFrameOwnerProperties ownerProperties(
       ownerElement->scrollingMode(), ownerElement->marginWidth(),
       ownerElement->marginHeight(), ownerElement->allowFullscreen(),
-      ownerElement->csp(), ownerElement->delegatedPermissions());
+      ownerElement->isDisplayNone(), ownerElement->csp(),
+      ownerElement->delegatedPermissions());
   // FIXME: Using subResourceAttributeName as fallback is not a perfect
   // solution. subResourceAttributeName returns just one attribute name. The
   // element might not have the attribute, and there might be other attributes