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

third_party/WebKit/Source/core/css/parser/CSSSelectorParser.cpp

Index: third_party/WebKit/Source/core/css/parser/CSSSelectorParser.cpp
diff --git a/third_party/WebKit/Source/core/css/parser/CSSSelectorParser.cpp b/third_party/WebKit/Source/core/css/parser/CSSSelectorParser.cpp
index 92e75170fa0a97bd7b82ae5fc521192534c75cba..2f28c889083824c4dae0bf689acd1b24d922306e 100644
--- a/third_party/WebKit/Source/core/css/parser/CSSSelectorParser.cpp
+++ b/third_party/WebKit/Source/core/css/parser/CSSSelectorParser.cpp
@@ -442,7 +442,7 @@ std::unique_ptr<CSSParserSelector> CSSSelectorParser::ConsumePseudo(
 
   AtomicString value = token.Value().ToAtomicString().LowerASCII();
   bool has_arguments = token.GetType() == kFunctionToken;
-  selector->UpdatePseudoType(value, has_arguments);
+  selector->UpdatePseudoType(value, *context_, has_arguments);
 
   if (!RuntimeEnabledFeatures::cssSelectorsFocusWithinEnabled() &&
       selector->GetPseudoType() == CSSSelector::kPseudoFocusWithin)
@@ -582,7 +582,8 @@ CSSSelector::RelationType CSSSelectorParser::ConsumeCombinator(
       const CSSParserToken& slash = range.ConsumeIncludingWhitespace();
       if (slash.GetType() != kDelimiterToken || slash.Delimiter() != '/')
         failed_parsing_ = true;
-      return CSSSelector::kShadowDeep;
+      return context_->IsDynamicProfile() ? CSSSelector::kShadowDeepAsDescendant
+                                          : CSSSelector::kShadowDeep;
     }
 
     default:
@@ -811,6 +812,7 @@ CSSSelectorParser::SplitCompoundAtImplicitShadowCrossingCombinator(
 
   std::unique_ptr<CSSParserSelector> second_compound =
       split_after->ReleaseTagHistory();
+  // TODO: Check second_compound->GetPseudoType()

[kochi, 2017/05/09 14:29:38]

What does this mean?

[hayato, 2017/05/10 06:57:04]

This was my private TODO which I forgot to remove.

[kochi, 2017/05/11 02:29:07]

Acknowledged.

   second_compound->AppendTagHistory(
       second_compound->GetPseudoType() == CSSSelector::kPseudoSlotted
           ? CSSSelector::kShadowSlot