1 files changed, 16 insertions, 1 deletions
diff --git a/components/script/dom/htmliframeelement.rs b/components/script/dom/htmliframeelement.rs
index 86146b8e915..d3359a40c89 100644
--- a/components/script/dom/htmliframeelement.rs
+++ b/components/script/dom/htmliframeelement.rs
@@ -38,9 +38,9 @@ use dom::window::{ReflowReason, Window};
 use ipc_channel::ipc;
 use js::jsapi::{JSAutoCompartment, RootedValue, JSContext, MutableHandleValue};
 use js::jsval::{UndefinedValue, NullValue};
-use layout_interface::ReflowQueryType;
 use msg::constellation_msg::{FrameType, LoadData, NavigationDirection, PipelineId, SubpageId};
 use net_traits::response::HttpsState;
+use script_layout_interface::message::ReflowQueryType;
 use script_traits::IFrameSandboxState::{IFrameSandboxed, IFrameUnsandboxed};
 use script_traits::{IFrameLoadInfo, MozBrowserEvent, ScriptMsg as ConstellationMsg};
 use std::cell::Cell;
@@ -562,6 +562,21 @@ impl HTMLIFrameElementMethods for HTMLIFrameElement {
     make_getter!(Height, "height");
     // https://html.spec.whatwg.org/multipage/#dom-dim-height
     make_dimension_setter!(SetHeight, "height");
+
+    // check-tidy: no specs after this line
+    fn SetMozprivatebrowsing(&self, value: bool) {
+        let element = self.upcast::<Element>();
+        element.set_bool_attribute(&Atom::from("mozprivatebrowsing"), value);
+    }
+
+    fn Mozprivatebrowsing(&self) -> bool {
+        if window_from_node(self).is_mozbrowser() {
+            let element = self.upcast::<Element>();
+            element.has_attribute(&Atom::from("mozprivatebrowsing"))
+        } else {
+            false
+        }
+    }
 }
 
 impl VirtualMethods for HTMLIFrameElement {