* It turns out that, in addition to other requirements of the
CalendarProvider, there is another - that the ORIGINAL_INSTANCE_TIME
also be set with hour, minute, and second as zero (in UTC)
* Change setTimes() to properly modify ORIGINAL_INSTANCE_TIME
* Also, there was a regression due to an incorrect validity test
for events; this regression caused all exception downsyncs to fail
* Changed isValidEventValues() to be correct for both exceptions
and original events
* Update tests for setTimes and isValidEventValues()
* This CL also fixes 2658988
Bug: 2664229
Change-Id: I9c8aea08e606ff58e5be37ca81a2d86a181c46f6
85a63c3c2f