558a232006
When recording data usage, measure the actual active time, since buckets can be quite long. Offer incrementOperationCount() version that reads thread stats tag for caller. Rethrow any NPE as ISE during stats parsing, which callers already handle. Bug: 5171812, 5184508, 5180659 Change-Id: I6da80ccc0162be68bee279529e3a23b6f98ebd87