Jonah Williams 3300a1bd68
[flutter_tools] eagerly set asset directory path, cache flutter views, simplify error handling (#68978)
Performs some small cleanup on the hot reload code path.

- Combines nested try/catch into single try catch, update on clause now that package:vm_service is used and Map does not need to be caught.
- Cache FlutterViews for the lifetime of the hot reload method handler
- Set asset directory path once during startup and remove conditional set during hot reload
2020-10-27 09:20:05 -07:00
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