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

content/common/frame_owner_properties.cc

 // Copyright 2016 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 "content/common/frame_owner_properties.h"
 
 namespace content {
 
 FrameOwnerProperties::FrameOwnerProperties()
     : scrolling_mode(blink::WebFrameOwnerProperties::ScrollingMode::Auto),
       margin_width(-1),
       margin_height(-1),
       allow_fullscreen(false),
-      allow_payment_request(false) {}
+      allow_payment_request(false),
+      is_display_none(false) {}
 
 FrameOwnerProperties::FrameOwnerProperties(const FrameOwnerProperties& other) =
     default;
 
 FrameOwnerProperties::~FrameOwnerProperties() {}
 
 bool FrameOwnerProperties::operator==(const FrameOwnerProperties& other) const {
   return name == other.name && scrolling_mode == other.scrolling_mode &&
          margin_width == other.margin_width &&
          margin_height == other.margin_height &&
          allow_fullscreen == other.allow_fullscreen &&
          allow_payment_request == other.allow_payment_request &&
+         is_display_none == other.is_display_none &&
          required_csp == other.required_csp &&
          std::equal(allowed_features.begin(), allowed_features.end(),
                     other.allowed_features.begin());
 }
 
 }  // namespace content