Remove ScopedStyleResolver::treeScopeFor.

sky/engine/core/css/resolver/ScopedStyleResolver.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 21 matching lines @@
 #include "sky/engine/core/css/StyleRule.h"
 #include "sky/engine/core/css/StyleSheetContents.h"
 #include "sky/engine/core/css/resolver/StyleResolver.h"
 #include "sky/engine/core/dom/Document.h"
 #include "sky/engine/core/dom/shadow/ElementShadow.h"
 #include "sky/engine/core/dom/shadow/ShadowRoot.h"
 #include "sky/engine/core/html/HTMLStyleElement.h"
 
 namespace blink {
 
-TreeScope* ScopedStyleResolver::treeScopeFor(Document& document, const CSSStyleSheet* sheet)
-{
-    ASSERT(sheet);
-
-    if (!sheet->ownerDocument())
-        return 0;
-
-    Node* ownerNode = sheet->ownerNode();
-    if (!isHTMLStyleElement(ownerNode))
-        return &document;
-
-    HTMLStyleElement& styleElement = toHTMLStyleElement(*ownerNode);
-    if (styleElement.isInShadowTree())
-        return styleElement.containingShadowRoot();
-    return &document;
-}
-
 void ScopedStyleResolver::addRulesFromSheet(CSSStyleSheet* cssSheet, const MediaQueryEvaluator& medium, StyleResolver* resolver)
 {
     m_authorStyleSheets.append(cssSheet);
     unsigned index = m_authorStyleSheets.size() - 1;
     StyleSheetContents* sheet = cssSheet->contents();
 
     AddRuleFlags addRuleFlags = RuleHasNoSpecialState;
     const RuleSet& ruleSet = sheet->ensureRuleSet(medium, addRuleFlags);
     resolver->addMediaQueryResults(ruleSet.viewportDependentMediaQueryResults());
     resolver->processScopedRules(ruleSet, cssSheet, index, treeScope().rootNode());
@@ skipping 48 matching lines @@
         contextFlags |= SelectorChecker::ScopeContainsLastMatchedElement;
 
     RuleRange ruleRange = collector.matchedResult().ranges.authorRuleRange();
     for (size_t i = 0; i < m_authorStyleSheets.size(); ++i) {
         MatchRequest matchRequest(&m_authorStyleSheets[i]->contents()->ruleSet(), includeEmptyRules, &m_scope->rootNode(), m_authorStyleSheets[i], applyAuthorStyles, i);
         collector.collectMatchingRules(matchRequest, ruleRange, static_cast<SelectorChecker::ContextFlags>(contextFlags), cascadeScope, cascadeOrder);
     }
 }
 
 } // namespace blink