Allow simple selectors after ::content for compat.

third_party/WebKit/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 "core/css/parser/CSSSelectorParser.h"
 
 #include "core/css/CSSSelectorList.h"
 #include "core/css/StyleSheetContents.h"
 #include "core/css/parser/CSSTokenizer.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 102 matching lines @@
     }
 }
 
 TEST(CSSSelectorParserTest, ShadowDomPseudoInCompound)
 {
     const char* testCases[][2] = {
         { "::shadow", "::shadow" },
         { ".a::shadow", ".a::shadow" },
         { "::content", "::content" },
         { ".a::content", ".a::content" },
+        { "::content.a", "::content.a" },
+        { "::content.a.b", "::content.a.b" },
+        { ".a::content.b", ".a::content.b" },
+        { "::content:not(#id)", "::content:not(#id)" }
     };
 
     for (auto testCase : testCases) {
         SCOPED_TRACE(testCase[0]);
         CSSTokenizer::Scope scope(testCase[0]);
         CSSParserTokenRange range = scope.tokenRange();
         CSSSelectorList list = CSSSelectorParser::parseSelector(range, CSSParserContext(HTMLStandardMode, nullptr), nullptr);
         EXPECT_STREQ(testCase[1], list.selectorsText().ascii().data());
     }
 }
@@ skipping 43 matching lines @@
 
 TEST(CSSSelectorParserTest, InvalidSimpleAfterPseudoElementInCompound)
 {
     const char* testCases[] = {
         "::before#id",
         "::after:hover",
         ".class::content::before",
         "::shadow.class",
         "::selection:window-inactive::before",
         "::-webkit-volume-slider.class",
-        "::content.a",
-        "::content.a.b",
-        ".a::content.b",
         "::before:not(.a)",
         "::shadow:not(::after)",
-        "::content:not(#id)",
         "::-webkit-scrollbar:vertical:not(:first-child)",
         "video::-webkit-media-text-track-region-container.scrolling",
         "div ::before.a"
     };
 
     for (auto testCase : testCases) {
         CSSTokenizer::Scope scope(testCase);
         CSSParserTokenRange range = scope.tokenRange();
         CSSSelectorList list = CSSSelectorParser::parseSelector(range, CSSParserContext(HTMLStandardMode, nullptr), nullptr);
         EXPECT_FALSE(list.isValid());
@@ skipping 97 matching lines @@
         SCOPED_TRACE(testCase[0]);
         CSSTokenizer::Scope scope(testCase[0]);
         CSSParserTokenRange range = scope.tokenRange();
         CSSSelectorList list = CSSSelectorParser::parseSelector(range, context, sheet.get());
         EXPECT_TRUE(list.isValid());
         EXPECT_STREQ(testCase[1], list.selectorsText().ascii().data());
     }
 }
 
 } // namespace blink