Don't use nonstandard %% dimension in unit tests

Source/core/css/CSSCalculationValueTest.cpp

Index: Source/core/css/CSSCalculationValueTest.cpp
diff --git a/Source/core/css/CSSCalculationValueTest.cpp b/Source/core/css/CSSCalculationValueTest.cpp
index c7614b41a24c73367529e9c6688080bce14d5755..b3e553024f1cb8a7809c0e7e4d6c9a4a5413dfb1 100644
--- a/Source/core/css/CSSCalculationValueTest.cpp
+++ b/Source/core/css/CSSCalculationValueTest.cpp
@@ -179,20 +179,20 @@ TEST(CSSCalculationValue, AddToLengthUnitValues)
 
     expectation.at(CSSPrimitiveValue::UnitTypePixels) = 0;
     expectation.at(CSSPrimitiveValue::UnitTypePercentage) = 20;
-    EXPECT_TRUE(lengthArraysEqual(expectation, setLengthArray(actual, "20%%")));
+    EXPECT_TRUE(lengthArraysEqual(expectation, setLengthArray(actual, "20%")));
 
     expectation.at(CSSPrimitiveValue::UnitTypePixels) = 30;
     expectation.at(CSSPrimitiveValue::UnitTypePercentage) = -40;
-    EXPECT_TRUE(lengthArraysEqual(expectation, setLengthArray(actual, "calc(30px - 40%%)")));
+    EXPECT_TRUE(lengthArraysEqual(expectation, setLengthArray(actual, "calc(30px - 40%)")));
 
     expectation.at(CSSPrimitiveValue::UnitTypePixels) = 90;
     expectation.at(CSSPrimitiveValue::UnitTypePercentage) = 10;
-    EXPECT_TRUE(lengthArraysEqual(expectation, setLengthArray(actual, "calc(1in + 10%% - 6px)")));
+    EXPECT_TRUE(lengthArraysEqual(expectation, setLengthArray(actual, "calc(1in + 10% - 6px)")));
 
     expectation.at(CSSPrimitiveValue::UnitTypePixels) = 15;
     expectation.at(CSSPrimitiveValue::UnitTypeFontSize) = 20;
     expectation.at(CSSPrimitiveValue::UnitTypePercentage) = -40;
-    EXPECT_TRUE(lengthArraysEqual(expectation, setLengthArray(actual, "calc((1 * 2) * (5px + 20em / 2) - 80%% / (3 - 1) + 5px)")));
+    EXPECT_TRUE(lengthArraysEqual(expectation, setLengthArray(actual, "calc((1 * 2) * (5px + 20em / 2) - 80% / (3 - 1) + 5px)")));
 }
 
 }