Deprecating FloatMath and Time

Bug: https://code.google.com/p/android/issues/detail?id=36199
Bug: https://code.google.com/p/android/issues/detail?id=37653
Bug: https://code.google.com/p/android/issues/detail?id=42750
Bug: https://code.google.com/p/android/issues/detail?id=61137
Bug: https://code.google.com/p/android/issues/detail?id=74754
Bug: https://code.google.com/p/android/issues/detail?id=76386
Bug: https://code.google.com/p/android/issues/detail?id=76439
Bug: https://code.google.com/p/android/issues/detail?id=77836
Change-Id: Ic9b57d8a575f93b2258a5481df0ed6b3a952f636