Clear baseLayoutStyle when the font selector version has increased.

Source/core/css/resolver/StyleResolver.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 2004-2005 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2006, 2007 Nicholas Shanks (webkit@nickshanks.com)
  * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
  * Copyright (C) 2007, 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (c) 2011, Code Aurora Forum. All rights reserved.
  * Copyright (C) Research In Motion Limited 2011. All rights reserved.
@@ skipping 548 matching lines @@
 
     if (sharingBehavior == AllowStyleSharing && (defaultParent || elementContext.parentStyle())) {
         SharedStyleFinder styleFinder(elementContext, m_features, m_siblingRuleSet.get(), m_uncommonAttributeRuleSet.get(), *this);
         if (RefPtr<LayoutStyle> sharedStyle = styleFinder.findSharedStyle())
             return sharedStyle.release();
     }
 
     StyleResolverState state(document(), elementContext, defaultParent);
 
     ElementAnimations* elementAnimations = element->elementAnimations();
-    const LayoutStyle* baseLayoutStyle = elementAnimations ? elementAnimations->baseLayoutStyle() : nullptr;
+    const LayoutStyle* baseLayoutStyle = elementAnimations ? elementAnimations->validateBaseLayoutStyle() : nullptr;
 
     if (baseLayoutStyle) {
         state.setStyle(LayoutStyle::clone(*baseLayoutStyle));
         if (!state.parentStyle())
             state.setParentStyle(initialStyleForElement());
     } else {
         if (state.parentStyle()) {
             RefPtr<LayoutStyle> style = LayoutStyle::create();
             style->inheritFrom(*state.parentStyle(), isAtShadowBoundary(element) ? LayoutStyle::AtShadowBoundary : LayoutStyle::NotAtShadowBoundary);
             state.setStyle(style.release());
@@ skipping 186 matching lines @@
     ASSERT(document().frame());
     ASSERT(document().settings());
     ASSERT(pseudoStyleRequest.pseudoId != FIRST_LINE_INHERITED);
     ASSERT(state.parentStyle());
 
     StyleResolverParentScope::ensureParentStackIsPushed();
 
     Element* pseudoElement = element.pseudoElement(pseudoStyleRequest.pseudoId);
 
     ElementAnimations* elementAnimations = pseudoElement ? pseudoElement->elementAnimations() : nullptr;
-    const LayoutStyle* baseLayoutStyle = elementAnimations ? elementAnimations->baseLayoutStyle() : nullptr;
+    const LayoutStyle* baseLayoutStyle = elementAnimations ? elementAnimations->validateBaseLayoutStyle() : nullptr;
 
     if (baseLayoutStyle) {
         state.setStyle(LayoutStyle::clone(*baseLayoutStyle));
     } else if (pseudoStyleRequest.allowsInheritance(state.parentStyle())) {
         RefPtr<LayoutStyle> style = LayoutStyle::create();
         style->inheritFrom(*state.parentStyle());
         state.setStyle(style.release());
     } else {
         state.setStyle(initialStyleForElement());
         state.setParentStyle(LayoutStyle::clone(*state.style()));
@@ skipping 713 matching lines @@
     visitor->trace(m_watchedSelectorsRules);
     visitor->trace(m_treeBoundaryCrossingRules);
     visitor->trace(m_styleResourceLoader);
     visitor->trace(m_styleSharingLists);
     visitor->trace(m_pendingStyleSheets);
     visitor->trace(m_document);
 #endif
 }
 
 } // namespace blink