This was was cloned from bug 16917 as part of operation convergence.
Originally filed: 2012-05-03 11:57:00 +0000

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 #0   contributor@whatwg.org                          2012-05-03 11:57:32 +0000 
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Specification: http://www.whatwg.org/specs/web-apps/current-work/multipage/the-video-element.html
Multipage: http://www.whatwg.org/C#text-track-api
Complete: http://www.whatwg.org/c#text-track-api

Comment:
snapToLines should throw InvalidStateError if the new value is false and
"line" is negative or greater than 100

Posted from: 88.131.66.80 by simonp@opera.com
User agent: Opera/9.80 (Macintosh; Intel Mac OS X 10.7.3; U; en) Presto/2.10.229 Version/11.62
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 #1   Simon Pieters                                   2012-05-03 11:59:09 +0000 
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Currently this throws:

cue.snapToLines = false;
cue.line = -1; // throws IndexSizeError

but this doesn't throw:

cue.snapToLines = true;
cue.line = -1;
cue.snapToLines = false; // this should not be allowed
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