[WebVTT] HTML5 "space" characters around "-->" are not required

Source/core/html/track/WebVTTParser.cpp

Index: Source/core/html/track/WebVTTParser.cpp
diff --git a/Source/core/html/track/WebVTTParser.cpp b/Source/core/html/track/WebVTTParser.cpp
index 9863cbc318bf2b1fefac9ab10b2f6497c4c0cb7f..989e5789bce126031ea93c19eb519a94b3a8ab66 100644
--- a/Source/core/html/track/WebVTTParser.cpp
+++ b/Source/core/html/track/WebVTTParser.cpp
@@ -277,9 +277,7 @@ WebVTTParser::ParseState WebVTTParser::collectTimingsAndSettings(const String& l
         return BadCue;
     if (position >= line.length())
         return BadCue;
-    char nextChar = line[position++];
-    if (nextChar != ' ' && nextChar != '\t')
-        return BadCue;
+
     skipWhiteSpace(line, &position);
 
     // 6-9 - If the next three characters are not "-->", abort and return failure.
@@ -288,9 +286,7 @@ WebVTTParser::ParseState WebVTTParser::collectTimingsAndSettings(const String& l
     position += 3;
     if (position >= line.length())
         return BadCue;
-    nextChar = line[position++];
-    if (nextChar != ' ' && nextChar != '\t')
-        return BadCue;
+
     skipWhiteSpace(line, &position);
 
     // 10-11 - Collect a WebVTT timestamp. If that fails, then abort and return failure. Otherwise, let cue's text track cue end time be the collected time.