am f5ca73be: am 8ccfd36d: am 1e64e52c: Merge "Fix a bug where the...

am f5ca73be: am 8ccfd36d: am 1e64e52c: Merge "Fix a bug where the TimedEventQueue mistakenly accesses a bogus event if the only event in the queue has been cancelled while we\'re waiting for its scheduled time. Avoids potential int64_t overflow when converting from us