Valentin Shergin c69313fc52 Fabric: Start/stop Surface calls were moved down to C++ layer
Summary:
There is no need to make JS calls to start or stop React Native apps; Scheduler does it automatically. Yay!

With this change (because we have to change Scheduler API) we are starting slow process migrating away from using term `reactRootTag` when we refer to running a ReactNative app (aka Surface). We will use `surfaceId` instead. We plan to slowly and gracefully retire `reactTag` term entity replacing it with several appropriate entities specific for particular usage, e.g. `viewId` (some id which makes sense for mounting), `surfaceId`, `nodeId` (unique id representing nodes which were cloned from the original one), or `eventTarget`.

Reviewed By: mdvacca

Differential Revision: D9999336

fbshipit-source-id: bbc7303c195b070b8c235c9ca35546d1dc693e98
2018-09-26 10:18:39 -07:00
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