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 ef7dac1351ffe9c497944152533c1ffa8afaa858..870669af1e7d41378399a89fdd159e6d20633969 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;
@@ -19,12 +20,12 @@ FrameOwnerProperties::FrameOwnerProperties(const FrameOwnerProperties& other) =
 FrameOwnerProperties::~FrameOwnerProperties() {}
 
 bool FrameOwnerProperties::operator==(const FrameOwnerProperties& other) const {
-  return name == other.name &&
-         scrolling_mode == other.scrolling_mode &&
+  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(delegated_permissions.begin(), delegated_permissions.end(),
                     other.delegated_permissions.begin());