Replace CSSParserString with StringView.

third_party/WebKit/Source/core/css/CSSVariableData.cpp

Index: third_party/WebKit/Source/core/css/CSSVariableData.cpp
diff --git a/third_party/WebKit/Source/core/css/CSSVariableData.cpp b/third_party/WebKit/Source/core/css/CSSVariableData.cpp
index 7dfc352c77f165b761072020d85699fc48944681..916c8071368dbd9daafac3f74563fbcc04f1d574 100644
--- a/third_party/WebKit/Source/core/css/CSSVariableData.cpp
+++ b/third_party/WebKit/Source/core/css/CSSVariableData.cpp
@@ -7,6 +7,7 @@
 #include "core/css/parser/CSSParser.h"
 #include "core/css/parser/CSSParserTokenRange.h"
 #include "wtf/text/StringBuilder.h"
+#include "wtf/text/StringView.h"
 
 namespace blink {
 
@@ -26,9 +27,8 @@ template<typename CharacterType> void CSSVariableData::updateTokens(const CSSPar
     for (const CSSParserToken& token : range) {
         if (token.hasStringBacking()) {
             unsigned length = token.value().length();
-            CSSParserString parserString;
-            parserString.init(currentOffset, length);
-            m_tokens.append(token.copyWithUpdatedString(parserString));
+            StringView string(currentOffset, length);
+            m_tokens.append(token.copyWithUpdatedString(string));
             currentOffset += length;
         } else {
             m_tokens.append(token);
@@ -49,13 +49,8 @@ void CSSVariableData::consumeAndUpdateTokens(const CSSParserTokenRange& range)
 
     while (!localRange.atEnd()) {
         CSSParserToken token = localRange.consume();
-        if (token.hasStringBacking()) {
-            CSSParserString value = token.value();
-            if (value.is8Bit())
-                stringBuilder.append(value.characters8(), value.length());
-            else
-                stringBuilder.append(value.characters16(), value.length());
-        }
+        if (token.hasStringBacking())
+            stringBuilder.append(token.value());
     }
     m_backingString = stringBuilder.toString();
     if (m_backingString.is8Bit())