Propagate exceptions when parsing invalid JSON received from VM service RPCs (#7222)
Propagate exceptions when parsing invalid JSON received from VM service RPCs (#7222)

The default rpc.Peer constructor was applying a transformer that filters
out these errors.

See https://github.com/flutter/flutter/issues/7174
flutter/flutter,flutter/flutter,tvolkert/flutter,Hixie/flutter,Hixie/flutter,Hixie/flutter,tvolkert/flutter,flutter/flutter,Hixie/flutter,tvolkert/flutter,cbracken/flutter,cbracken/flutter,cbracken/flutter,cbracken/flutter,Hixie/flutter,cbracken/flutter,flutter/flutter,turnidge/flutter,Hixie/flutter,turnidge/flutter,tvolkert/flutter,flutter/flutter,cbracken/flutter,Hixie/flutter,Hixie/flutter,flutter/flutter,cbracken/flutter,tvolkert/flutter,tvolkert/flutter,turnidge/flutter,Hixie/flutter,cbracken/flutter,cbracken/flutter,tvolkert/flutter,flutter/flutter,tvolkert/flutter,flutter/flutter,turnidge/flutter,flutter/flutter,tvolkert/flutter,tvolkert/flutter,cbracken/flutter,Hixie/flutter,flutter/flutter,turnidge/flutter