Refactor HttpFetchPlugin to clarify error outcomes #1532
Merged
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Previously, HttpFetchPlugin would treat any non-Shaka error as
HTTP_ERROR when there were potentially other circumstances which
could have produced a non-Shaka error.
This change catches errors from fetch sooner, so that there is no
need to do a fuzzy check for error.severity. It also clears the
request timeout regardless of whether fetch throws or not.
Closes #1519