Summary:
The MessageQueue has a _debugInfo object where it stores debug information associated with each callback. The size of this structure is currently unbounded.
It looks like the code attempted to restrict _debugInfo to a fixed number of entries but due to a logic bug, it leaked around 30 entries for every 1 entry it cleaned up.
This change limits the _debugInfo object to around 30 entries.
**Test plan (required)**
This change is currently being used in my team's app.
Adam Comella
Microsoft Corp.
Closes https://github.com/facebook/react-native/pull/9611
Differential Revision: D3781875
fbshipit-source-id: 58c645c52c3e295fe571b7ca7e0d882169c301ef
5d748b2eec