Don't bother validating networks that don't satisfy the default request.

The only immediate change in behavior is not validating untrusted networks.

bug:18299572
bug:18394654

Change-Id: I8d626baf37db0bd0f55ddf3af8a0abf094a12369
2 files changed
tree: 0dd7084c593595fcdff06cc226aad6e1750a7c9e
  1. core/
  2. services/
  3. tests/