Summary: In OSS, we only had an iOS implementation of this NativeModule. Internally, we have several different Android implementations. The iOS and the Android implementations don't have the same APIs. So, I didn't name this Spec generically `NativePushNotificationManager`.
Reviewed By: mdvacca
Differential Revision: D16390844
fbshipit-source-id: 97b53042892f80089fc8cf5e1c8a06bd49696594
Ramanpreet Nara