Remove usage of CSSParserValue in MediaQueryParser

Source/core/css/parser/CSSParserToken.cpp

Index: Source/core/css/parser/CSSParserToken.cpp
diff --git a/Source/core/css/parser/CSSParserToken.cpp b/Source/core/css/parser/CSSParserToken.cpp
index 5ac3d2cbf4d2ed44fa1fa9fd95e8cbb01c671b86..222e78fe177e1dc6f391a45b1345dc91650fa313 100644
--- a/Source/core/css/parser/CSSParserToken.cpp
+++ b/Source/core/css/parser/CSSParserToken.cpp
@@ -13,6 +13,11 @@
 
 namespace blink {
 
+struct SameSizeAsCSSParserToken {
+    void* fields[3];
+};
+static_assert(sizeof(CSSParserToken) == sizeof(SameSizeAsCSSParserToken), "CSSParserToken should stay small");
+
 CSSParserToken::CSSParserToken(CSSParserTokenType type, BlockType blockType)
     : m_type(type)
     , m_blockType(blockType)