Add new helper VTTParser::collectDigitsToInt

Source/core/html/track/vtt/VTTParser.h

 /*
  * Copyright (C) 2011 Google Inc.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 75 matching lines @@
     {
         // WebVTT space characters are U+0020 SPACE, U+0009 CHARACTER TABULATION (tab), U+000A LINE FEED (LF), U+000C FORM FEED (FF), and U+000D CARRIAGE RETURN    (CR).
         return c == ' ' || c == '\t' || c == '\n' || c == '\f' || c == '\r';
     }
     static inline bool isValidSettingDelimiter(char c)
     {
         // ... a WebVTT cue consists of zero or more of the following components, in any order, separated from each other by one or more
         // U+0020 SPACE characters or U+0009 CHARACTER TABULATION (tab) characters.
         return c == ' ' || c == '\t';
     }
-    static String collectDigits(const String&, unsigned*);
+    static unsigned collectDigitsToInt(const String& input, unsigned* position, int& number);
     static String collectWord(const String&, unsigned*);
     static double collectTimeStamp(const String&, unsigned*);
 
     // Useful functions for parsing percentage settings.
     static float parseFloatPercentageValue(const String&, bool&);
     static FloatPoint parseFloatPercentageValuePair(const String&, char, bool&);
 
     // Create the DocumentFragment representation of the WebVTT cue text.
     static PassRefPtr<DocumentFragment> createDocumentFragmentFromCueText(Document&, const String&);
 
@@ skipping 19 matching lines @@
     ParseState collectCueText(const String&);
     ParseState recoverCue(const String&);
     ParseState ignoreBadCue(const String&);
 
     void createNewCue();
     void resetCueValues();
 
     void collectMetadataHeader(const String&);
     void createNewRegion(const String& headerValue);
 
-    void skipWhiteSpace(const String&, unsigned*);
+    static String collectDigits(const String&, unsigned*);
+    static void skipWhiteSpace(const String&, unsigned*);
 
     BufferedLineReader m_lineReader;
     OwnPtr<TextResourceDecoder> m_decoder;
     String m_currentId;
     double m_currentStartTime;
     double m_currentEndTime;
     StringBuilder m_currentContent;
     String m_currentSettings;
 
     VTTParserClient* m_client;
 
     Vector<RefPtr<VTTCue> > m_cuelist;
 
     Vector<RefPtr<VTTRegion> > m_regionList;
 };
 
 } // namespace WebCore
 
 #endif