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

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

Index: third_party/WebKit/Source/core/css/parser/CSSParserImpl.cpp
diff --git a/third_party/WebKit/Source/core/css/parser/CSSParserImpl.cpp b/third_party/WebKit/Source/core/css/parser/CSSParserImpl.cpp
index 22bd3fd725a646243259b4d707c803866bb011ff..650714f44c4838913a743feefafe175f1f2a8703 100644
--- a/third_party/WebKit/Source/core/css/parser/CSSParserImpl.cpp
+++ b/third_party/WebKit/Source/core/css/parser/CSSParserImpl.cpp
@@ -254,7 +254,6 @@
 }
 
 CSSSelectorList CSSParserImpl::ParsePageSelector(
-    const CSSParserContext& context,
     CSSParserTokenRange range,
     StyleSheetContents* style_sheet) {
   // We only support a small subset of the css-page spec.
@@ -283,7 +282,7 @@
     selector = CSSParserSelector::Create();
     if (!pseudo.IsNull()) {
       selector->SetMatch(CSSSelector::kPagePseudoClass);
-      selector->UpdatePseudoType(pseudo.DeprecatedLower(), context);
+      selector->UpdatePseudoType(pseudo.DeprecatedLower());
       if (selector->GetPseudoType() == CSSSelector::kPseudoUnknown)
         return CSSSelectorList();
     }
@@ -734,8 +733,7 @@
 
 StyleRulePage* CSSParserImpl::ConsumePageRule(CSSParserTokenRange prelude,
                                               CSSParserTokenRange block) {
-  CSSSelectorList selector_list =
-      ParsePageSelector(*context_, prelude, style_sheet_);
+  CSSSelectorList selector_list = ParsePageSelector(prelude, style_sheet_);
   if (!selector_list.IsValid())
     return nullptr;  // Parse error, invalid @page selector