1 files changed, 28 insertions, 0 deletions
diff --git a/layout/style/nsICSSDeclaration.cpp b/layout/style/nsICSSDeclaration.cpp
new file mode 100644
index 0000000000..2c0f2d813a
--- /dev/null
+++ b/layout/style/nsICSSDeclaration.cpp
@@ -0,0 +1,28 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/* Implementation of non-inline bits of nsICSSDeclaration. */
+
+#include "nsICSSDeclaration.h"
+
+#include "nsINode.h"
+#include "mozilla/css/Rule.h"
+
+using mozilla::dom::DocGroup;
+
+DocGroup* nsICSSDeclaration::GetDocGroup() {
+  nsINode* parentNode = GetAssociatedNode();
+  if (!parentNode) {
+    return nullptr;
+  }
+
+  return parentNode->GetDocGroup();
+}
+
+bool nsICSSDeclaration::IsReadOnly() {
+  mozilla::css::Rule* rule = GetParentRule();
+  return rule && rule->IsReadOnly();
+}