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

content/common/frame_owner_properties.cc

Index: content/common/frame_owner_properties.cc
diff --git a/content/common/frame_owner_properties.cc b/content/common/frame_owner_properties.cc
index a29dfc2cf619e50bce900aa0b1e84328b5a65a10..706a200be096110894697241eacf4ca724da4954 100644
--- a/content/common/frame_owner_properties.cc
+++ b/content/common/frame_owner_properties.cc
@@ -11,7 +11,8 @@ FrameOwnerProperties::FrameOwnerProperties()
       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;
@@ -24,6 +25,7 @@ bool FrameOwnerProperties::operator==(const FrameOwnerProperties& other) const {
          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());