Make /deep/ as no-op and remove ::shadow in dynamic profile

third_party/WebKit/Source/core/css/CSSSelector.h

Index: third_party/WebKit/Source/core/css/CSSSelector.h
diff --git a/third_party/WebKit/Source/core/css/CSSSelector.h b/third_party/WebKit/Source/core/css/CSSSelector.h
index 91e93c38e4eeba324faa946878a8e2e2a311335b..8f3e577f761b9e3b57c16c5e11f9f18c7f949671 100644
--- a/third_party/WebKit/Source/core/css/CSSSelector.h
+++ b/third_party/WebKit/Source/core/css/CSSSelector.h
@@ -25,6 +25,7 @@
 
 #include <memory>
 #include "core/CoreExport.h"
+#include "core/css/parser/CSSParserContext.h"
 #include "core/dom/QualifiedName.h"
 #include "core/style/ComputedStyleConstants.h"
 #include "platform/wtf/RefCounted.h"
@@ -132,6 +133,7 @@ class CORE_EXPORT CSSSelector {
     // Special cases for shadow DOM related selectors.
     kShadowPiercingDescendant,  // >>> combinator
     kShadowDeep,                // /deep/ combinator
+    kShadowDeepAsDescendant,    // /deep/ as an alias for descendant
     kShadowPseudo,              // ::shadow pseudo element
     kShadowSlot                 // ::slotted() pseudo element
   };
@@ -238,7 +240,9 @@ class CORE_EXPORT CSSSelector {
   PseudoType GetPseudoType() const {
     return static_cast<PseudoType>(pseudo_type_);
   }
-  void UpdatePseudoType(const AtomicString&, bool has_arguments);
+  void UpdatePseudoType(const AtomicString&,
+                        const CSSParserContext&,
+                        bool has_arguments);
 
   static PseudoType ParsePseudoType(const AtomicString&, bool has_arguments);
   static PseudoId ParsePseudoId(const String&);