Moving fontSelector from StyleResolver to StyleEngine.

Source/core/dom/DocumentStyleSheetCollection.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, 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) 2013 Google Inc. All rights reserved.
  *
@@ skipping 140 matching lines @@
     collection.appendActiveStyleSheets(engine->injectedAuthorStyleSheets());
     collection.appendActiveStyleSheets(engine->documentAuthorStyleSheets());
     collectActiveCSSStyleSheetsFromSeamlessParents(collection, document());
     collectStyleSheets(engine, collection);
 
     StyleSheetChange change;
     analyzeStyleSheetChange(updateMode, collection, change);
 
     if (change.styleResolverUpdateType == Reconstruct) {
         engine->clearResolver();
+        engine->resetFontSelector();
     } else if (StyleResolver* styleResolver = engine->resolverIfExists()) {
         // FIXME: We might have already had styles in child treescope. In this case, we cannot use buildScopedStyleTreeInDocumentOrder.
         // Need to change "false" to some valid condition.
         styleResolver->setBuildScopedStyleTreeInDocumentOrder(false);
         if (change.styleResolverUpdateType != Additive) {
             ASSERT(change.styleResolverUpdateType == Reset || change.styleResolverUpdateType == ResetStyleResolverAndFontSelector);
             resetAllRuleSetsInTreeScope(styleResolver);
             if (change.styleResolverUpdateType == ResetStyleResolverAndFontSelector)
-                styleResolver->resetFontSelector();
+                engine->resetFontSelector();
             styleResolver->removePendingAuthorStyleSheets(m_activeAuthorStyleSheets);
             styleResolver->lazyAppendAuthorStyleSheets(0, collection.activeAuthorStyleSheets());
         } else {
             styleResolver->lazyAppendAuthorStyleSheets(m_activeAuthorStyleSheets.size(), collection.activeAuthorStyleSheets());
         }
+    } else if (change.styleResolverUpdateType == ResetStyleResolverAndFontSelector) {
+        engine->resetFontSelector();
     }
     m_scopingNodesForStyleScoped.didRemoveScopingNodes();
     collection.swap(*this);
     updateUsesRemUnits();
 
     return change.requiresFullStyleRecalc;
 }
 
 }