CSSStyleSheet::insertRule should respect the default namespace

Source/core/css/parser/CSSSelectorParserTest.cpp

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 #include "core/css/parser/CSSSelectorParser.h"
 
 #include "core/css/CSSSelectorList.h"
 #include "core/css/parser/CSSTokenizer.h"
 #include <gtest/gtest.h>
@@ skipping 95 matching lines @@
         SCOPED_TRACE(testCases[i]);
 
         std::pair<int, int> ab;
         CSSTokenizer::Scope scope(testCases[i]);
         CSSParserTokenRange range = scope.tokenRange();
         bool passed = CSSSelectorParser::consumeANPlusB(range, ab);
         EXPECT_FALSE(passed);
     }
 }
 
-TEST(CSSSelectorParserTest, ContentPseudoInCompound)
+TEST(CSSSelectorParserTest, ShadowDomPseudoInCompound)
 {
     const char* testCases[][2] = {
-        { "::content", "*::content" }, // crbug.com/478969
+        { "::shadow", "*::shadow" }, // crbug.com/478969
+        { ".a::shadow", ".a::shadow" },
+        { "::content", "::content" },
         { ".a::content", ".a::content" },
         { "::content.a", ".a::content" },
         { "::content.a.b", ".b.a::content" },
         { ".a::content.b", ".b.a::content" },
     };
 
     for (unsigned i = 0; i < WTF_ARRAY_LENGTH(testCases); ++i) {
         SCOPED_TRACE(testCases[i][0]);
         CSSTokenizer::Scope scope(testCases[i][0]);
         CSSParserTokenRange range = scope.tokenRange();
         CSSSelectorList list;
-        CSSSelectorParser::parseSelector(range, CSSParserContext(HTMLStandardMode, nullptr), nullAtom, nullptr, list);
+        CSSSelectorParser::parseSelector(range, CSSParserContext(HTMLStandardMode, nullptr), nullptr, list);
         EXPECT_STREQ(testCases[i][1], list.selectorsText().ascii().data());
     }
 }
 
 } // namespace