CSS Tokenizer: Consume a single whitespace after escapes if present

Source/core/css/parser/CSSTokenizer.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 CSSTokenizer_h
 #define CSSTokenizer_h
 
 #include "core/css/parser/CSSParserToken.h"
 #include "core/html/parser/InputStreamPreprocessor.h"
 #include "wtf/text/WTFString.h"
@@ skipping 17 matching lines @@
     UChar consume();
     void consume(unsigned);
     void reconsume(UChar);
 
     CSSParserToken consumeNumericToken();
     CSSParserToken consumeIdentLikeToken();
     CSSParserToken consumeNumber();
     CSSParserToken consumeStringTokenUntil(UChar);
 
     void consumeUntilNonWhitespace();
+    void consumeSingleWhitespaceIfNext();
     bool consumeUntilCommentEndFound();
 
     bool consumeIfNext(UChar);
     String consumeName();
     UChar consumeEscape();
 
     bool nextTwoCharsAreValidEscape();
     bool nextCharsAreNumber(UChar);
     bool nextCharsAreNumber();
     bool nextCharsAreIdentifier(UChar);
@@ skipping 28 matching lines @@
     CSSParserToken endOfFile(UChar);
 
     CSSTokenizerInputStream& m_input;
 };
 
 
 
 } // namespace blink
 
 #endif // CSSTokenizer_h