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

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

Index: third_party/WebKit/Source/core/css/SelectorChecker.cpp
diff --git a/third_party/WebKit/Source/core/css/SelectorChecker.cpp b/third_party/WebKit/Source/core/css/SelectorChecker.cpp
index 6f0ca6a2c8fc542f52eaa82e7f20f3fb1d4d228d..24a9987e8356bb2624b16529a5faa25b1cda8d6c 100644
--- a/third_party/WebKit/Source/core/css/SelectorChecker.cpp
+++ b/third_party/WebKit/Source/core/css/SelectorChecker.cpp
@@ -345,7 +345,7 @@ SelectorChecker::Match SelectorChecker::matchForRelation(const SelectorCheckingC
 
     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())
@@ -360,7 +360,7 @@ SelectorChecker::Match SelectorChecker::matchForRelation(const SelectorCheckingC
 
     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)