AOSP/DeskClock - Updated to sdkVersion 29.

+ Fixed all the comments from jplemieux@ in CL: https://android-review.googlesource.com/c/platform/packages/apps/DeskClock/+/1161143
+ Incorporated changes from Luca Stefani (https://android-review.googlesource.com/c/platform/packages/apps/DeskClock/+/1162919)

BUG: 133177396
BUG: 143990962

Test: manual - Tested the DeskClock UI manually and tested the alarm, stopwatch and timer.

$ make -j 40

$ ls -l out/target/product/generic/system/product/app/DeskClock/DeskClock.apk
  -rw-r--r-- 1 rtenneti .... 6436375 Nov 11 16:09 out/target/product/generic/system/product/app/DeskClock/DeskClock.apk

$ adb install -r out/target/product/generic/system/product/app/DeskClock/DeskClock.apk

+ Verified by setting up the alaram and waiting for the alarm to go off.
  "Clock has stopped" wasn't displayed. Noted there were no exceptions in the logs. (b/135587258)

  ++ The following are the results from logcat with manual alaram testing
      On x20web site in my home directory - ~rtenneti/android/
            logcat.out.1111.1610
            logcat.out.1112.1603

  ++ Verified there were no java exceptions.
  $ grep -n -i 'exception' ~rtenneti/android/logcat.out.1111.1610 | wc -l
   0

  ++ Verified Alarm was firing (results are in x20web site)
  $ grep -n -i 'alarm' ~rtenneti/android/logcat.out.1111.1610
    (for an alarm that was set to 19:12:00 at 19:11:19. Results from Alarm firing).

  6880:11-11 19:11:19.403  8813  8863 I AlarmClock: Registering instance: 1
  6881:11-11 19:11:19.405  8813  8863 I AlarmClock: Setting high notification state to instance 1
  6882:11-11 19:11:19.406  8813  8863 V AlarmClock: *** notifyChange() id: 1 url content://com.android.deskclock/instances/1
  6883:11-11 19:11:19.408  8813  8863 V AlarmClock: Displaying high priority notification for alarm instance: 1
  6884:11-11 19:11:19.414  8813  8863 I AlarmClock: Scheduling state change 5 to instance 1 at Mon 7:12 PM (1573517520000)
  6885:11-11 19:11:19.419  8813  8863 I AlarmClock: Setting upcoming AlarmClockInfo for alarm: 1
  6887:11-11 19:11:19.423  1329  1329 V SettingsProvider: Notifying for 0: content://settings/system/next_alarm_formatted
  ....
  7143:11-11 19:12:00.031  1329  1329 V SettingsProvider: Notifying for 0: content://settings/system/next_alarm_formatted
  7144:11-11 19:12:00.032  1329  1329 D ConditionProviders.SCP: onReceive android.app.action.NEXT_ALARM_CLOCK_CHANGED
  ....
  7152:11-11 19:12:00.055  8813  8813 I AlarmClock: Setting fire state to instance 1
  7153:11-11 19:12:00.105  8813  8813 V AlarmClock: *** notifyChange() id: 1 url content://com.android.deskclock/instances/1
  7154:11-11 19:12:00.112  8813  8813 D Events  : [Alarm] [Fire]
  7155:11-11 19:12:00.113  8813  8813 I AlarmClock: Scheduling state change 6 to instance 1 at Mon 7:22 PM (1573518120000)
  7156:11-11 19:12:00.118  8813  8813 I AlarmClock: Canceling upcoming AlarmClockInfo
  7157:11-11 19:12:00.123  8813  8813 V AlarmClock: AlarmService.start with instance: 1
  7158:11-11 19:12:00.124  8813  8813 V AlarmClock: Displaying alarm notification for alarm instance: 1
  7159:11-11 19:12:00.130  8813  8813 V AlarmClock: Clearing notifications for alarm instance: 1
  7161:11-11 19:12:00.145  8813  8813 V AlarmClock: AlarmKlaxon.start()
  ...

Change-Id: I005530d5d82568e028acb4cbad1f3212fc9c61a2