Report nav timing 2 instance as soon as it's requested.

third_party/WebKit/Source/core/loader/DocumentLoader.h

 /*
  * Copyright (C) 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 65 matching lines @@
                                 const SubstituteData& data,
                                 ClientRedirectPolicy clientRedirectPolicy) {
     DCHECK(frame);
 
     return new DocumentLoader(frame, request, data, clientRedirectPolicy);
   }
   ~DocumentLoader() override;
 
   LocalFrame* frame() const { return m_frame; }
 
-  ResourceTimingInfo* getNavigationTimingInfo() const;
+  std::unique_ptr<ResourceTimingInfo> getNavigationTimingInfo() const;
 
   virtual void detachFromFrame();
 
   unsigned long mainResourceIdentifier() const;
 
   void replaceDocumentWhileExecutingJavaScriptURL(const DocumentInit&,
                                                   const String& source);
 
   const AtomicString& mimeType() const;
 
@@ skipping 197 matching lines @@
   // Used to protect against reentrancy into dataReceived().
   bool m_inDataReceived;
   RefPtr<SharedBuffer> m_dataBuffer;
 };
 
 DECLARE_WEAK_IDENTIFIER_MAP(DocumentLoader);
 
 }  // namespace blink
 
 #endif  // DocumentLoader_h