[MS10.3] Move multiplySafeByRational to NetworkStatsUtils

Test: atest NetworkStaticLibTests:com.android.net.moduletests.util.NetworkStatsUtilsTest
Bug: 204830222
Change-Id: I87df4dc754f6fc46ea1a7e8770a3c76c019e097e
2 files changed
tree: b2490c1eeb2a4a8f09741aabc3950949186ee41e
  1. staticlibs/