Replace Handler with Executor for async DNS API

Bug: 124882626
Test: built, flashed, booted
      atest DnsResolverTest DnsPacketTest

Change-Id: Ie1dc27643d4767f2a8a39da755edf388a00962d5
1 file changed
tree: 03ef2658d22419b9fc0b16566b6977d7dc30087b
  1. core/
  2. services/
  3. tests/