Clean up around FrameFetchContext

third_party/WebKit/Source/core/dom/Document.cpp

Index: third_party/WebKit/Source/core/dom/Document.cpp
diff --git a/third_party/WebKit/Source/core/dom/Document.cpp b/third_party/WebKit/Source/core/dom/Document.cpp
index 918fe8920fc185a7b77e0888895ed187d1baf7e1..cb2b98af8f92f294eae0ae1732c637c975c8e060 100644
--- a/third_party/WebKit/Source/core/dom/Document.cpp
+++ b/third_party/WebKit/Source/core/dom/Document.cpp
@@ -506,10 +506,11 @@ Document::Document(const DocumentInit& initializer,
     if (registry && m_registrationContext)
       registry->entangle(m_registrationContext);
   } else if (m_importsController) {
-    m_fetcher = FrameFetchContext::createContextAndFetcher(nullptr, this);
+    m_fetcher = FrameFetchContext::createFetcherFromDocument(this);
   } else {
     m_fetcher = ResourceFetcher::create(nullptr);
   }
+  DCHECK(m_fetcher);
 
   m_rootScrollerController = RootScrollerController::create(*this);