1 files changed, 16 insertions, 0 deletions
diff --git a/dom/base/ScriptableContentIterator.cpp b/dom/base/ScriptableContentIterator.cpp
index d10c4e68f8..ab04053c29 100644
--- a/dom/base/ScriptableContentIterator.cpp
+++ b/dom/base/ScriptableContentIterator.cpp
@@ -109,6 +109,22 @@ ScriptableContentIterator::InitWithRange(IteratorType aType, nsRange* aRange) {
 }
 
 NS_IMETHODIMP
+ScriptableContentIterator::InitWithRangeAllowCrossShadowBoundary(
+    IteratorType aType, nsRange* aRange) {
+  if (aType == NOT_INITIALIZED ||
+      (mIteratorType != NOT_INITIALIZED && aType != mIteratorType) ||
+      aType != SUBTREE_ITERATOR) {
+    return NS_ERROR_INVALID_ARG;
+  }
+
+  mIteratorType = aType;
+  MOZ_ASSERT(mIteratorType == SUBTREE_ITERATOR);
+  EnsureContentIterator();
+  return static_cast<ContentSubtreeIterator*>(mContentIterator.get())
+      ->InitWithAllowCrossShadowBoundary(aRange);
+}
+
+NS_IMETHODIMP
 ScriptableContentIterator::InitWithPositions(IteratorType aType,
                                              nsINode* aStartContainer,
                                              uint32_t aStartOffset,