Removed m_isQuirkValue and used CSSPrimitiveValue::QuirkyEms instead

Source/core/css/resolver/StyleBuilderConverter.cpp

Index: Source/core/css/resolver/StyleBuilderConverter.cpp
diff --git a/Source/core/css/resolver/StyleBuilderConverter.cpp b/Source/core/css/resolver/StyleBuilderConverter.cpp
index 47607dc1f07b5b6de28bb78ff574750a5d503c24..93dbdd38b86326e60e2e0baf4f72a7da80bdfa05 100644
--- a/Source/core/css/resolver/StyleBuilderConverter.cpp
+++ b/Source/core/css/resolver/StyleBuilderConverter.cpp
@@ -729,7 +729,7 @@ Length StyleBuilderConverter::convertQuirkyLength(StyleResolverState& state, CSS
 {
     Length length = convertLengthOrAuto(state, value);
     // This is only for margins which use __qem
-    length.setQuirk(toCSSPrimitiveValue(value)->isQuirkValue());
+    length.setQuirk(toCSSPrimitiveValue(value)->isQuirkyEms());
     return length;
 }