Chrome currently doesn't ignore transitions when using "@media print"

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)
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
@@ skipping 519 matching lines @@
     String userAgent(const KURL&) const final;
     void disableEval(const String& errorMessage) final;
 
     CSSStyleSheet& elementSheet();
 
     virtual PassRefPtrWillBeRawPtr<DocumentParser> createParser();
     DocumentParser* parser() const { return m_parser.get(); }
     ScriptableDocumentParser* scriptableDocumentParser() const;
 
     bool printing() const { return m_printing; }
-    void setPrinting(bool p) { m_printing = p; }
+    void setPrinting(bool isPrinting) { m_printing = isPrinting; }
+    bool wasPrinting() const { return m_wasPrinting; }
 
     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 compatibilityMode() const { return m_compatibilityMode; }
@@ skipping 637 matching lines @@
 
     // Mime-type of the document in case it was cloned or created by XHR.
     AtomicString m_mimeType;
 
     RefPtrWillBeMember<DocumentType> m_docType;
     OwnPtrWillBeMember<DOMImplementation> m_implementation;
 
     RefPtrWillBeMember<CSSStyleSheet> m_elemSheet;
 
     bool m_printing;
+    bool m_wasPrinting;
     bool m_paginatedForScreen;
 
     CompatibilityMode m_compatibilityMode;
     bool m_compatibilityModeLocked; // This is cheaper than making setCompatibilityMode virtual.
 
     OwnPtr<CancellableTaskFactory> m_executeScriptsWaitingForResourcesTask;
 
     bool m_hasAutofocused;
     Timer<Document> m_clearFocusedElementTimer;
     RefPtrWillBeMember<Element> m_autofocusElement;
@@ skipping 226 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