844d27cb3c
This is a no-op change, except for fixing a bug where download task reference wasn't cleared after download was completed. This change also removes call to output stream flush(), which is not necessary according to Java spec. The rest of the change deals with requiring the code to work directly with ResourceUpdater object instead of having FlutterMain be a facade that forwards some of ResourceUpdater's methods. This simplifies the other (more essential) upcoming changes that will be landing in the followings few PRs.
Flutter Engine
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