| Index: third_party/WebKit/Source/core/frame/LocalDOMWindow.cpp | 
| diff --git a/third_party/WebKit/Source/core/frame/LocalDOMWindow.cpp b/third_party/WebKit/Source/core/frame/LocalDOMWindow.cpp | 
| index 7379a49a1a7d082a1f730431b2a5679d546146c9..2bc7c78c208c7cd2eb5cad85d6aea8535778c978 100644 | 
| --- a/third_party/WebKit/Source/core/frame/LocalDOMWindow.cpp | 
| +++ b/third_party/WebKit/Source/core/frame/LocalDOMWindow.cpp | 
| @@ -1328,7 +1328,12 @@ CustomElementsRegistry* LocalDOMWindow::customElements(ScriptState* scriptState) | 
| CustomElementsRegistry* LocalDOMWindow::customElements() const | 
| { | 
| if (!m_customElements && m_document) | 
| -        m_customElements = CustomElementsRegistry::create(document()); | 
| +        m_customElements = CustomElementsRegistry::create(this); | 
| +    return m_customElements; | 
| +} | 
| + | 
| +CustomElementsRegistry* LocalDOMWindow::maybeCustomElements() const | 
| +{ | 
| return m_customElements; | 
| } | 
|  | 
|  |