Disable scroll anchoring when in printing mode

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

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012 Apple Inc. All
  * rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved.
  * (http://www.torchmobile.com/)
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
@@ skipping 610 matching lines @@
 
   String userAgent() const final;
   void disableEval(const String& errorMessage) final;
 
   CSSStyleSheet& elementSheet();
 
   virtual DocumentParser* createParser();
   DocumentParser* parser() const { return m_parser.get(); }
   ScriptableDocumentParser* scriptableDocumentParser() const;
 
-  bool printing() const { return m_printing; }
-  void setPrinting(bool isPrinting) { m_printing = isPrinting; }
-  bool wasPrinting() const { return m_wasPrinting; }
+  // FinishingPrinting denotes that the non-printing layout state is being
+  // restored.
+  enum PrintingState { NotPrinting, Printing, FinishingPrinting };
+  bool printing() const { return m_printing == Printing; }
+  bool finishingOrIsPrinting() {
+    return m_printing == Printing || m_printing == FinishingPrinting;
+  }
+  void setPrinting(PrintingState state) { m_printing = state; }
 
   bool paginatedForScreen() const { return m_paginatedForScreen; }
   void setPaginatedForScreen(bool p) { m_paginatedForScreen = p; }
 
   bool paginated() const { return printing() || paginatedForScreen(); }
 
   enum CompatibilityMode { QuirksMode, LimitedQuirksMode, NoQuirksMode };
 
   void setCompatibilityMode(CompatibilityMode);
   CompatibilityMode getCompatibilityMode() const { return m_compatibilityMode; }
@@ skipping 787 matching lines @@
   AtomicString m_baseTarget;
 
   // Mime-type of the document in case it was cloned or created by XHR.
   AtomicString m_mimeType;
 
   Member<DocumentType> m_docType;
   Member<DOMImplementation> m_implementation;
 
   Member<CSSStyleSheet> m_elemSheet;
 
-  bool m_printing;
-  bool m_wasPrinting;
+  PrintingState m_printing;
   bool m_paginatedForScreen;
 
   CompatibilityMode m_compatibilityMode;
   // This is cheaper than making setCompatibilityMode virtual.
   bool m_compatibilityModeLocked;
 
   std::unique_ptr<CancellableTaskFactory>
       m_executeScriptsWaitingForResourcesTask;
 
   bool m_hasAutofocused;
@@ skipping 233 matching lines @@
 DEFINE_TYPE_CASTS(TreeScope, Document, document, true, true);
 
 }  // namespace blink
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 CORE_EXPORT void showLiveDocumentInstances();
 #endif
 
 #endif  // Document_h