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-rw-r--r--components/script/dom/browsercontext.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/components/script/dom/browsercontext.rs b/components/script/dom/browsercontext.rs
index a54477a2ff8..b4cbb6be336 100644
--- a/components/script/dom/browsercontext.rs
+++ b/components/script/dom/browsercontext.rs
@@ -67,6 +67,7 @@ impl BrowserContext {
}
#[deriving(Encodable)]
+#[must_root]
pub struct SessionHistoryEntry {
document: JS<Document>,
children: Vec<BrowserContext>