Remove position argument from VTTParser::collectTimeStamp

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

 /*
  * 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 422 matching lines @@
         if (m_regionList[i]->id() == region->id()) {
             m_regionList.remove(i);
             break;
         }
     }
 
     // Step 12.5.11
     m_regionList.append(region);
 }
 
-bool VTTParser::collectTimeStamp(const String& line, unsigned* position, double& timeStamp)
+bool VTTParser::collectTimeStamp(const String& line, double& timeStamp)
 {
-    VTTLegacyScanner input(line, position);
+    VTTScanner input(line);
     return collectTimeStamp(input, timeStamp);
 }
 
 bool VTTParser::collectTimeStamp(VTTScanner& input, double& timeStamp)
 {
     // Collect a WebVTT timestamp (5.3 WebVTT cue timings and settings parsing.)
     // Steps 1 - 4 - Initial checks, let most significant units be minutes.
     enum Mode { Minutes, Hours };
     Mode mode = Minutes;
 
@@ skipping 120 matching lines @@
                 break;
             }
         }
         if (nodeType == VTTNodeTypeLanguage)
             m_languageStack.removeLast();
         if (m_currentNode->parentNode())
             m_currentNode = m_currentNode->parentNode();
         break;
     }
     case VTTTokenTypes::TimestampTag: {
-        unsigned position = 0;
         String charactersString = m_token.characters();
         double parsedTimeStamp;
-        if (VTTParser::collectTimeStamp(charactersString, &position, parsedTimeStamp))
+        if (VTTParser::collectTimeStamp(charactersString, parsedTimeStamp))
             m_currentNode->parserAppendChild(ProcessingInstruction::create(document, "timestamp", charactersString));
         break;
     }
     default:
         break;
     }
 }
 
 }