Missing m_failedParsing=true for unresolved namespace.

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

Index: third_party/WebKit/Source/core/css/parser/CSSSelectorParserTest.cpp
diff --git a/third_party/WebKit/Source/core/css/parser/CSSSelectorParserTest.cpp b/third_party/WebKit/Source/core/css/parser/CSSSelectorParserTest.cpp
index 539c1302aaa5d843a0c8fdcf7a04c7198c11d322..644d29416b8d69df0daaa11f6a2b16248020498a 100644
--- a/third_party/WebKit/Source/core/css/parser/CSSSelectorParserTest.cpp
+++ b/third_party/WebKit/Source/core/css/parser/CSSSelectorParserTest.cpp
@@ -5,6 +5,7 @@
 #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"
 
@@ -251,4 +252,23 @@ TEST(CSSSelectorParserTest, InvalidPseudoElementInNonRightmostCompound)
     }
 }
 
+TEST(CSSSelectorParserTest, UnresolvedNamespacePrefix)
+{
+    const char* testCases[] = {
+        "ns|div",
+        "div ns|div",
+        "div ns|div "
+    };
+
+    CSSParserContext context(HTMLStandardMode, nullptr);
+    RefPtrWillBeRawPtr<StyleSheetContents> sheet = StyleSheetContents::create(context);
+
+    for (auto testCase : testCases) {
+        CSSTokenizer::Scope scope(testCase);
+        CSSParserTokenRange range = scope.tokenRange();
+        CSSSelectorList list = CSSSelectorParser::parseSelector(range, context, sheet.get());
+        EXPECT_FALSE(list.isValid());
+    }
+}
+
 } // namespace