youtube: Rewrite the ISO 8601 duration parsing.
youtube: Rewrite the ISO 8601 duration parsing.

Former-commit-id: 45f760945f303cabf38b8ec5270623650a0261a0 [formerly b1d63cfa4f78db71d14d5c1d906eba2a42721edb]
Former-commit-id: a8cf2337a2b340659fc7794a1f2fab98f70eb632
torhve/ivar2,torhve/ivar2,haste/ivar2,torhve/ivar2