Moving fontSelector from StyleResolver to StyleEngine.

Source/core/dom/DocumentStyleSheetCollection.cpp

Index: Source/core/dom/DocumentStyleSheetCollection.cpp
diff --git a/Source/core/dom/DocumentStyleSheetCollection.cpp b/Source/core/dom/DocumentStyleSheetCollection.cpp
index 87a308caa7766e66ea0fdd1b73a2de36a0d256eb..be92fe1a6762d84e040da2d5d70304289426c687 100644
--- a/Source/core/dom/DocumentStyleSheetCollection.cpp
+++ b/Source/core/dom/DocumentStyleSheetCollection.cpp
@@ -158,6 +158,7 @@ bool DocumentStyleSheetCollection::updateActiveStyleSheets(StyleEngine* engine,
 
     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.
@@ -166,12 +167,14 @@ bool DocumentStyleSheetCollection::updateActiveStyleSheets(StyleEngine* engine,
             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);