support function in custom paint input arguments

third_party/WebKit/Source/core/css/parser/CSSPropertyParserTest.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/css/parser/CSSPropertyParser.h"
 
 #include "core/css/CSSValueList.h"
 #include "core/css/parser/CSSParser.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace blink {
 
 static int computeNumberOfTracks(const CSSValueList* valueList) {
   int numberOfTracks = 0;
   for (auto& value : *valueList) {
     if (value->isGridLineNamesValue())
       continue;
     ++numberOfTracks;
   }
   return numberOfTracks;
 }
 
+TEST(CSSPropertyParserTest, CSSPaint_Functions) {
+  const CSSValue* value = CSSParser::parseSingleValue(
+      CSSPropertyBackgroundImage, "paint(foo, func1(1px, 3px), red)");
+  ASSERT_TRUE(value);
+  ASSERT_TRUE(value->isImageGeneratorValue());
+  EXPECT_EQ(value->cssText(), "paint(foo, func1(1px, 3px), red)");
+}
+
 TEST(CSSPropertyParserTest, CSSPaint_NoArguments) {
   const CSSValue* value =
       CSSParser::parseSingleValue(CSSPropertyBackgroundImage, "paint(foo)");
   ASSERT_TRUE(value);
   ASSERT_TRUE(value->isImageGeneratorValue());
   EXPECT_EQ(value->cssText(), "paint(foo)");
 }
 
 TEST(CSSPropertyParserTest, CSSPaint_ValidArguments) {
   const CSSValue* value = CSSParser::parseSingleValue(
@@ skipping 218 matching lines @@
 }
 
 TEST(CSSPropertyParserTest, GridPositionLimit8) {
   const CSSValue* value =
       CSSParser::parseSingleValue(CSSPropertyGridRowEnd, "-5000000000");
   DCHECK(value);
   EXPECT_EQ(getGridPositionInteger(*value), -1000);
 }
 
 }  // namespace blink