grpc-js: Add ChildLoadBalancerHandler and use it for refactoring#1406

Merged

murgatroid99 merged 5 commits intogrpc:masterfrom murgatroid99:grpc-js_priority_load_balancer

May 27, 2020

+303-284

Commits on May 4, 2020

Commits on May 5, 2020

Don't allow null load balancing configs
murgatroid99
committed

Commits on May 21, 2020

Merge branch 'master' into grpc-js_priority_load_balancer
murgatroid99
committed