Make CSSCalcValue work with CSSParserTokenRange

Source/core/css/parser/CSSParserTokenRange.h

 // 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.
 
 #ifndef CSSParserTokenRange_h
 #define CSSParserTokenRange_h
 
 #include "core/CoreExport.h"
 #include "core/css/parser/CSSParserToken.h"
 #include "wtf/Vector.h"
@@ skipping 33 matching lines @@
         return *m_first++;
     }
 
     const CSSParserToken& consumeIncludingWhitespace()
     {
         const CSSParserToken& result = consume();
         consumeWhitespace();
         return result;
     }
 
+    const CSSParserToken& consumeSkippingWhitespace()

[Timothy Loh, 2015/07/28 08:17:41]

The CSS parsing code uses a strategy of consuming trailing whitespace, we should
probably be consistent and do the same for calc instead of adding this opposite
strategy.

+    {
+        consumeWhitespace();
+        return consume();
+    }
+
     // The returned range doesn't include the brackets
     CSSParserTokenRange consumeBlock();
 
     void consumeComponentValue();
 
     void consumeWhitespace()
     {
         while (peek().type() == WhitespaceToken)
             ++m_first;
     }
@@ skipping 11 matching lines @@
     , m_last(last)
     { }
 
     const CSSParserToken* m_first;
     const CSSParserToken* m_last;
 };
 
 } // namespace
 
 #endif // CSSParserTokenRange_h