Move more helper methods out of CSSPropertyParser

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

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/css/parser/CSSParserToken.h"
 
 #include "core/css/CSSMarkup.h"
 #include "core/css/CSSPrimitiveValueUnitTrie.h"
 #include "core/css/parser/CSSPropertyParser.h"
 #include "wtf/HashMap.h"
@@ skipping 276 matching lines @@
     case RightBraceToken:
         return builder.append('}');
 
     case EOFToken:
     case CommentToken:
         ASSERT_NOT_REACHED();
         return;
     }
 }
 
+bool CSSParserToken::isValidNumericValue(double value)
+{
+    return value >= -std::numeric_limits<float>::max()
+        && value <= std::numeric_limits<float>::max();
+}
+
+bool CSSParserToken::isValidNumericValue() const
+{
+    return isValidNumericValue(numericValue());
+}
+
 } // namespace blink