Rename ^ and ^^ combinator to /shadow-all/ and /shadow-deep/.

Source/core/css/StyleInvalidationAnalysis.cpp

 /*
  * Copyright (C) 2012 Apple 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.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 40 matching lines @@
         // This picks the widest scope, not the narrowest, to minimize the number of found scopes.
         for (const CSSSelector* current = selector; current; current = current->tagHistory()) {
             // Prefer ids over classes.
             if (current->m_match == CSSSelector::Id)
                 scopeSelector = current;
             else if (current->m_match == CSSSelector::Class && (!scopeSelector || scopeSelector->m_match != CSSSelector::Id))
                 scopeSelector = current;
             CSSSelector::Relation relation = current->relation();
             // FIXME: it would be better to use setNeedsStyleRecalc for all shadow hosts matching
             // scopeSelector. Currently requests full style recalc.
-            if (relation == CSSSelector::DescendantTree || relation == CSSSelector::ChildTree)
+            if (relation == CSSSelector::ShadowDeep || relation == CSSSelector::ShadowAll)
                 return false;
             if (relation != CSSSelector::Descendant && relation != CSSSelector::Child && relation != CSSSelector::SubSelector)
                 break;
         }
         if (!scopeSelector)
             return false;
         ASSERT(scopeSelector->m_match == CSSSelector::Class || scopeSelector->m_match == CSSSelector::Id);
         if (scopeSelector->m_match == CSSSelector::Id)
             idScopes.add(scopeSelector->value().impl());
         else
@@ skipping 140 matching lines @@
             element->setNeedsStyleRecalc(SubtreeStyleChange);
             // The whole subtree is now invalidated, we can skip to the next sibling.
             element = ElementTraversal::nextSkippingChildren(*element);
             continue;
         }
         element = ElementTraversal::next(*element);
     }
 }
 
 }