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

third_party/WebKit/Source/core/html/HTMLFrameOwnerElement.cpp

Index: third_party/WebKit/Source/core/html/HTMLFrameOwnerElement.cpp
diff --git a/third_party/WebKit/Source/core/html/HTMLFrameOwnerElement.cpp b/third_party/WebKit/Source/core/html/HTMLFrameOwnerElement.cpp
index 71cbfeb52cd1ff8a4b58e2ab18f31658ff52ba5f..64a0f46f576167b5defd7685ef767f4dbece0894 100644
--- a/third_party/WebKit/Source/core/html/HTMLFrameOwnerElement.cpp
+++ b/third_party/WebKit/Source/core/html/HTMLFrameOwnerElement.cpp
@@ -221,13 +221,6 @@
   widget->dispose();
 }
 
-void HTMLFrameOwnerElement::frameOwnerPropertiesChanged() {
-  // Don't notify about updates if contentFrame() is null, for example when
-  // the subframe hasn't been created yet.
-  if (contentFrame())
-    document().frame()->loader().client()->didChangeFrameOwnerProperties(this);
-}
-
 void HTMLFrameOwnerElement::dispatchLoad() {
   dispatchScopedEvent(Event::create(EventTypeNames::load));
 }
@@ -250,15 +243,6 @@
   if (widget == m_widget)
     return;
 
-  Document* doc = contentDocument();
-  if (doc && doc->frame()) {
-    bool willBeDisplayNone = !widget;
-    if (isDisplayNone() != willBeDisplayNone) {
-      doc->willChangeFrameOwnerProperties(marginWidth(), marginHeight(),
-                                          scrollingMode(), willBeDisplayNone);
-    }
-  }
-
   if (m_widget) {
     if (m_widget->parent())
       moveWidgetToParentSoon(m_widget.get(), 0);
@@ -266,7 +250,6 @@
   }
 
   m_widget = widget;
-  frameOwnerPropertiesChanged();
 
   LayoutPart* layoutPart = toLayoutPart(layoutObject());
   LayoutPartItem layoutPartItem = LayoutPartItem(layoutPart);