Introduce an injection point to configure the internal pointer of WeakPtr

third_party/WebKit/Source/core/html/parser/HTMLDocumentParser.h

Index: third_party/WebKit/Source/core/html/parser/HTMLDocumentParser.h
diff --git a/third_party/WebKit/Source/core/html/parser/HTMLDocumentParser.h b/third_party/WebKit/Source/core/html/parser/HTMLDocumentParser.h
index ab8375dcfe522d2b03c6233329ba0dc43c0316d4..c273fb56df4d41f9d1fa9dc0667b5944b145c566 100644
--- a/third_party/WebKit/Source/core/html/parser/HTMLDocumentParser.h
+++ b/third_party/WebKit/Source/core/html/parser/HTMLDocumentParser.h
@@ -236,8 +236,8 @@ private:
     // so they can be set and cleared together and passed between threads together.
     std::unique_ptr<TokenizedChunk> m_lastChunkBeforeScript;
     Deque<std::unique_ptr<TokenizedChunk>> m_speculations;
-    WeakPtrFactory<HTMLDocumentParser> m_weakFactory;
-    WeakPtr<BackgroundHTMLParser> m_backgroundParser;
+    RevocableWeakMemberFactory<HTMLDocumentParser> m_weakFactory;
+    WTF::WeakPtr<BackgroundHTMLParser> m_backgroundParser;
     Member<HTMLResourcePreloader> m_preloader;
     PreloadRequestStream m_queuedPreloads;
     Vector<String> m_queuedDocumentWriteScripts;