Do not show deprecation message for ::shadow and /deep/ on querySelector

third_party/WebKit/Source/core/css/SelectorChecker.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 2004-2005 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2006, 2007 Nicholas Shanks (webkit@nickshanks.com)
  * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
  * Copyright (C) 2007, 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (c) 2011, Code Aurora Forum. All rights reserved.
  * Copyright (C) Research In Motion Limited 2011. All rights reserved.
@@ skipping 327 matching lines @@
         nextContext.element = ElementTraversal::previousSibling(*context.element);
         for (; nextContext.element; nextContext.element = ElementTraversal::previousSibling(*nextContext.element)) {
             Match match = matchSelector(nextContext, result);
             if (match == SelectorMatches || match == SelectorFailsAllSiblings || match == SelectorFailsCompletely)
                 return match;
         }
         return SelectorFailsAllSiblings;
 
     case CSSSelector::ShadowPseudo:
         {
-            if (!m_isUARule && context.selector->getPseudoType() == CSSSelector::PseudoShadow)
+            if (!m_isUARule && !m_isQuerySelector && context.selector->getPseudoType() == CSSSelector::PseudoShadow)
                 Deprecation::countDeprecation(context.element->document(), UseCounter::CSSSelectorPseudoShadow);
             // If we're in the same tree-scope as the scoping element, then following a shadow descendant combinator would escape that and thus the scope.
             if (context.scope && context.scope->shadowHost() && context.scope->shadowHost()->treeScope() == context.element->treeScope())
                 return SelectorFailsCompletely;
 
             Element* shadowHost = context.element->shadowHost();
             if (!shadowHost)
                 return SelectorFailsCompletely;
             nextContext.element = shadowHost;
             return matchSelector(nextContext, result);
         }
 
     case CSSSelector::ShadowDeep:
         {
-            if (!m_isUARule)
+            if (!m_isUARule && !m_isQuerySelector)
                 Deprecation::countDeprecation(context.element->document(), UseCounter::CSSDeepCombinator);
             if (ShadowRoot* root = context.element->containingShadowRoot()) {
                 if (root->type() == ShadowRootType::UserAgent)
                     return SelectorFailsCompletely;
             }
 
             if (context.selector->relationIsAffectedByPseudoContent()) {
                 // TODO(kochi): closed mode tree should be handled as well for ::content.
                 for (Element* element = context.element; element; element = element->parentOrShadowHostElement()) {
                     if (matchForPseudoContent(nextContext, *element, result) == SelectorMatches)
@@ skipping 769 matching lines @@
 }
 
 bool SelectorChecker::matchesFocusPseudoClass(const Element& element)
 {
     if (InspectorInstrumentation::forcePseudoState(const_cast<Element*>(&element), CSSSelector::PseudoFocus))
         return true;
     return element.focused() && isFrameFocused(element);
 }
 
 } // namespace blink