2 files changed, 13 insertions, 0 deletions
diff --git a/core/fxcrt/xml/cfx_xmldocument.cpp b/core/fxcrt/xml/cfx_xmldocument.cpp
index f6e55551ed..5ce4aed694 100644
--- a/core/fxcrt/xml/cfx_xmldocument.cpp
+++ b/core/fxcrt/xml/cfx_xmldocument.cpp
@@ -12,3 +12,10 @@ CFX_XMLDocument::CFX_XMLDocument() {
 }
 
 CFX_XMLDocument::~CFX_XMLDocument() = default;
+
+void CFX_XMLDocument::AppendNodesFrom(CFX_XMLDocument* other) {
+  nodes_.reserve(nodes_.size() + other->nodes_.size());
+  nodes_.insert(nodes_.end(), std::make_move_iterator(other->nodes_.begin()),
+                std::make_move_iterator(other->nodes_.end()));
+  other->nodes_.clear();
+}
diff --git a/core/fxcrt/xml/cfx_xmldocument.h b/core/fxcrt/xml/cfx_xmldocument.h
index a568f8390f..7d6f02b48d 100644
--- a/core/fxcrt/xml/cfx_xmldocument.h
+++ b/core/fxcrt/xml/cfx_xmldocument.h
@@ -29,6 +29,12 @@ class CFX_XMLDocument {
     return static_cast<T*>(nodes_.back().get());
   }
 
+  // Transfers ownership of entries in |nodes_| from |other| to |this|.
+  // This is used in CJX_Node::loadXML to transfer ownership of the newly
+  // created nodes to the top-level XML doc for the PDF, after parsing an XML
+  // blob.
+  void AppendNodesFrom(CFX_XMLDocument* other);
+
  private:
   std::vector<std::unique_ptr<CFX_XMLNode>> nodes_;
   UnownedPtr<CFX_XMLElement> root_;