Summary:
This is the first step to migrate the registration of Android-specific `ComponentDescriptors` to `ComponentDescriptorProviderRegistry`.
`ComponentDescriptorProviderRegistry` is a never API for component registration that supports reactive registration and simplified signatures for `registry` (`add`) method.
It's tedious to keep those signatures in sync with the base class (`ComponentDescriptor`), we have an idea how to make it better by using a single struct with all params but a migration to that will be a separate effort.
The changes are pure syntactical.
Changelog: [Internal] Internal changes in Fabric.
Reviewed By: mdvacca
Differential Revision: D18010488
fbshipit-source-id: 4cbfdbcae235b32a94b38df2095c956299764e59
Summary: Storing a strong shared pointer to `ComponentDescriptor` can cause a memory leak. Therefore we enforce all call sides and params to be weak pointers. The only Scheduler preserves a retaining pointer to it (to prevent preliminary deallocation).
Reviewed By: sammy-SC
Differential Revision: D17115540
fbshipit-source-id: fdea7d19f742ff04d5ba5470dd9748a5b226aa7c