Add fdtrack atom.

Bug: http://b/183008833
Bug: http://b/183018597
Test: adb shell 'setprop persist.sys.debug.fdtrack_interval 10; stop; start' && statsd_testdrive 364
Change-Id: If028dae3dde75d4d44016c128ea98680fe996528
(cherry picked from commit be339fc5262edb17bab9640aa204ed62d2f525ee)
1 file changed
tree: 6fee060a04eb638150c0a70611f67332021d2ec1
  1. stats/
  2. OWNERS