Migrates off getInstrumentedStats' deprecated fields
Migrates off getInstrumentedStats' deprecated fields

Summary:
This diffs replaces uses of the deprecated fields from HermesInternal.getInstrumentedStats() with the ones from Hermes' TimedRuntime.

Changelog:
[General][Added] - JSITimerInternal descriptor

Reviewed By: rubennorte

Differential Revision: D36625701

fbshipit-source-id: fbdb554e5cfb0b3556fcbe01f9e2930ace66a619

janicduplessis/react-native,facebook/react-native,facebook/react-native,janicduplessis/react-native,janicduplessis/react-native,facebook/react-native,janicduplessis/react-native,facebook/react-native,facebook/react-native,facebook/react-native,javache/react-native,javache/react-native,javache/react-native,javache/react-native,janicduplessis/react-native,facebook/react-native,javache/react-native,janicduplessis/react-native,javache/react-native,facebook/react-native,janicduplessis/react-native,javache/react-native,janicduplessis/react-native,javache/react-native,javache/react-native,facebook/react-native