Move TreeBoundaryCrossingScopes to StyleEngine.

third_party/WebKit/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)
@@ skipping 93 matching lines @@
     // was modified or not.  We should only remove modified/removed @font-face
     // rules, or @font-face rules from removed stylesheets. We currently avoid
     // clearing the font cache when we have had an analyzed update and no
     // @font-face rules were removed, in which case requiresFullStyleRecalc will
     // be false.
     if (change.requiresFullStyleRecalc)
       engine.clearFontCache();
   } else if (StyleResolver* styleResolver = engine.resolver()) {
     if (change.styleResolverUpdateType != Additive) {
       DCHECK_EQ(change.styleResolverUpdateType, Reset);
-      styleResolver->resetAuthorStyle(treeScope());
+      engine.resetAuthorStyle(treeScope());
       engine.removeFontFaceRules(change.fontFaceRulesToRemove);
       styleResolver->removePendingAuthorStyleSheets(m_activeAuthorStyleSheets);
       styleResolver->lazyAppendAuthorStyleSheets(
           0, collection->activeAuthorStyleSheets());
     } else {
       styleResolver->lazyAppendAuthorStyleSheets(
           m_activeAuthorStyleSheets.size(),
           collection->activeAuthorStyleSheets());
     }
   }
@@ skipping 18 matching lines @@
       continue;
     if (!candidate.canBeActivated(
             document().styleEngine().preferredStylesheetSetName()))
       continue;
     viewportResolver.collectViewportRulesFromAuthorSheet(
         *toCSSStyleSheet(sheet));
   }
 }
 
 }  // namespace blink