0 -> nullptr for UseCounter pointer in CSSParserContext.

third_party/WebKit/Source/core/animation/DeferredLegacyStyleInterpolationTest.cpp

 // Copyright 2014 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/animation/DeferredLegacyStyleInterpolation.h"
 
 #include "core/css/CSSInheritedValue.h"
 #include "core/css/CSSPrimitiveValue.h"
 #include "core/css/CSSValueList.h"
 #include "core/css/StylePropertySet.h"
 #include "core/css/parser/CSSParser.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace blink {
 
 class AnimationDeferredLegacyStyleInterpolationTest : public ::testing::Test {
 protected:
     static bool test(CSSPropertyID propertyID, const String& string)
     {
         CSSParserMode parserMode = HTMLStandardMode;
         if (propertyID == CSSPropertyFloodColor)
             parserMode = SVGAttributeMode;
-        CSSValue* value = CSSParser::parseSingleValue(propertyID, string, CSSParserContext(parserMode, 0));
+        CSSValue* value = CSSParser::parseSingleValue(propertyID, string, CSSParserContext(parserMode, nullptr));
         ASSERT(value);
         return DeferredLegacyStyleInterpolation::interpolationRequiresStyleResolve(*value);
     }
 };
 
 TEST_F(AnimationDeferredLegacyStyleInterpolationTest, Inherit)
 {
     EXPECT_TRUE(test(CSSPropertyCaptionSide, "inherit"));
 }
 
@@ skipping 64 matching lines @@
     EXPECT_TRUE(test(CSSPropertyBackdropFilter, "drop-shadow(20px 10vw green)"));
     EXPECT_TRUE(test(CSSPropertyBackdropFilter, "drop-shadow(0px 0px 0px currentcolor)"));
     EXPECT_FALSE(test(CSSPropertyBackdropFilter, "opacity(1)"));
     EXPECT_FALSE(test(CSSPropertyBackdropFilter, "saturate(0)"));
     EXPECT_FALSE(test(CSSPropertyBackdropFilter, "grayscale(1)"));
     EXPECT_FALSE(test(CSSPropertyBackdropFilter, "invert(1)"));
     EXPECT_FALSE(test(CSSPropertyBackdropFilter, "sepia(1)"));
     EXPECT_TRUE(test(CSSPropertyBackdropFilter, "url(#svgfilter)"));
 }
 } // namespace blink