Improve named grid areas parsing

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

Index: third_party/WebKit/Source/core/css/parser/CSSParserIdioms.h
diff --git a/third_party/WebKit/Source/core/css/parser/CSSParserIdioms.h b/third_party/WebKit/Source/core/css/parser/CSSParserIdioms.h
index b9ad905cbf7855c69a85f8d7cfa7567857c5b2b9..86d7aeca2f876ec45f7f6b4251b63bbb6c095239 100644
--- a/third_party/WebKit/Source/core/css/parser/CSSParserIdioms.h
+++ b/third_party/WebKit/Source/core/css/parser/CSSParserIdioms.h
@@ -42,6 +42,20 @@ inline bool isCSSSpace(UChar c)
     return c == ' ' || c == '\t' || c == '\n';
 }
 
+// http://dev.w3.org/csswg/css-syntax/#name-start-code-point
+template <typename CharacterType>
+bool isNameStartCodePoint(CharacterType c)
+{
+    return isASCIIAlpha(c) || c == '_' || !isASCII(c);
+}
+
+// http://dev.w3.org/csswg/css-syntax/#name-code-point
+template <typename CharacterType>
+bool isNameCodePoint(CharacterType c)
+{
+    return isNameStartCodePoint(c) || isASCIIDigit(c) || c == '-';
+}
+
 }
 
 #endif