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

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

 /*
  * 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, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2008, 2009, 2011, 2012 Google Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) Research In Motion Limited 2010-2011. All rights reserved.
@@ skipping 367 matching lines @@
     , m_hasNodesWithPlaceholderStyle(false)
     , m_evaluateMediaQueriesOnStyleRecalc(false)
     , m_pendingSheetLayout(NoLayoutWithPendingSheets)
     , m_frame(initializer.frame())
     , m_domWindow(m_frame ? m_frame->localDOMWindow() : 0)
     , m_importsController(initializer.importsController())
     , m_activeParserCount(0)
     , m_contextFeatures(ContextFeatures::defaultSwitch())
     , m_wellFormed(false)
     , m_printing(false)
+    , m_wasPrinting(false)
     , m_paginatedForScreen(false)
     , m_compatibilityMode(NoQuirksMode)
     , m_compatibilityModeLocked(false)
     , m_executeScriptsWaitingForResourcesTask(CancellableTaskFactory::create(this, &Document::executeScriptsWaitingForResources))
     , m_hasAutofocused(false)
     , m_clearFocusedElementTimer(this, &Document::clearFocusedElementTimerFired)
     , m_domTreeVersion(++s_globalTreeVersion)
     , m_styleVersion(0)
     , m_listenerTypes(0)
     , m_mutationObserverTypes(0)
@@ skipping 1430 matching lines @@
 
     view()->recalcOverflowAfterStyleChange();
     view()->setFrameTimingRequestsDirty(true);
 
     clearChildNeedsStyleRecalc();
 
     // Pseudo element removal and similar may only work with these flags still set. Reset them after the style recalc.
     styleEngine().resetCSSFeatureFlags(resolver.ensureUpdatedRuleFeatureSet());
     resolver.clearStyleSharingList();
 
+    m_wasPrinting = m_printing;
+
     ASSERT(!needsStyleRecalc());
     ASSERT(!childNeedsStyleRecalc());
     ASSERT(inStyleRecalc());
     ASSERT(styleResolver() == &resolver);
     m_lifecycle.advanceTo(DocumentLifecycle::StyleClean);
     if (shouldRecordStats) {
         TRACE_EVENT_END2("blink,blink_style", "Document::updateStyle",
             "resolverAccessCount", styleEngine().resolverAccessCount() - initialResolverAccessCount,
             "counters", resolver.stats()->toTracedValue());
     } else {
@@ skipping 3906 matching lines @@
 #ifndef NDEBUG
 using namespace blink;
 void showLiveDocumentInstances()
 {
     Document::WeakDocumentSet& set = Document::liveDocumentSet();
     fprintf(stderr, "There are %u documents currently alive:\n", set.size());
     for (Document* document : set)
         fprintf(stderr, "- Document %p URL: %s\n", document, document->url().string().utf8().data());
 }
 #endif