olly 99c0ba005a Add support for TTML Regions extent
This allows limiting the horizontal extension of the cues.
NOTE: So far, we only support percentages for size magnitudes.
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=121682404
2016-06-15 19:40:39 +01:00
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2016-06-15 19:40:39 +01:00