Migrate Debug(Failing)ElapsedClock to new API

Test: adb shell cmd stats pull-source 10046
Test: adb shell cmd stats pull-source 10047
Bug: 145565211
Change-Id: I515269ec77880d85ce2ce83bd81ea6f34b6e3db7
1 file changed
tree: 2f6fce9d4e6bf8ce0e3f79fc8ef92778a19e6a97
  1. apex/