Rename collectTreeBoundaryCrossingRules.

Include V0Cascade order to reflect that this is the legacy code for
Shadow DOM V0 cascading order in pure V0 documents.

R=kochi@chromium.org

Review-Url: https://codereview.chromium.org/2445673002
Cr-Commit-Position: refs/heads/master@{#427042}

third_party/WebKit/Source/core/css/resolver/StyleResolver.cpp

@@ -594,7 +594,7 @@ void StyleResolver::matchAuthorRulesV0(const Element& element,
 
   // Apply /deep/ and ::shadow rules from outer scopes, and ::content from
   // inner.
-  collectTreeBoundaryCrossingRules(element, collector);
+  collectTreeBoundaryCrossingRulesV0CascadeOrder(element, collector);
   collector.sortAndTransferMatchedRules();
 }
 
@@ -684,7 +684,7 @@ void StyleResolver::matchAllRules(StyleResolverState& state,
   collector.finishAddingAuthorRulesForTreeScope();
 }
 
-void StyleResolver::collectTreeBoundaryCrossingRules(
+void StyleResolver::collectTreeBoundaryCrossingRulesV0CascadeOrder(
     const Element& element,
     ElementRuleCollector& collector) {
   if (m_treeBoundaryCrossingScopes.isEmpty())

third_party/WebKit/Source/core/css/resolver/StyleResolver.h

@@ -223,7 +223,8 @@ class CORE_EXPORT StyleResolver final
                      ElementRuleCollector&,
                      bool includeSMILProperties);
   void collectFeatures();
-  void collectTreeBoundaryCrossingRules(const Element&, ElementRuleCollector&);
+  void collectTreeBoundaryCrossingRulesV0CascadeOrder(const Element&,
+                                                      ElementRuleCollector&);
 
   void applyMatchedProperties(StyleResolverState&, const MatchResult&);
   bool applyAnimatedProperties(StyleResolverState&,