Move StringView constructors into WTFString.h/AtomicString.h

third_party/WebKit/Source/core/css/parser/CSSParserToken.h

Index: third_party/WebKit/Source/core/css/parser/CSSParserToken.h
diff --git a/third_party/WebKit/Source/core/css/parser/CSSParserToken.h b/third_party/WebKit/Source/core/css/parser/CSSParserToken.h
index 6158842ce9c04970f1eea60e5944d89f64447a6d..fa882366884c93d2a788ee3134532755dc12f8e4 100644
--- a/third_party/WebKit/Source/core/css/parser/CSSParserToken.h
+++ b/third_party/WebKit/Source/core/css/parser/CSSParserToken.h
@@ -94,7 +94,9 @@ public:
     CSSParserTokenType type() const { return static_cast<CSSParserTokenType>(m_type); }
     StringView value() const
     {
-        return StringView(m_valueDataCharRaw, m_valueLength, m_valueIs8Bit);
+        if (m_valueIs8Bit)
+            return StringView(reinterpret_cast<const LChar*>(m_valueDataCharRaw), m_valueLength);
+        return StringView(reinterpret_cast<const UChar*>(m_valueDataCharRaw), m_valueLength);
     }
 
     UChar delimiter() const;