Merge changes from topic "syncbranch" into gce-dev

* changes:
  Add namespace to GetDefaultDomain
  Revert "Allocate a virtio bridge in the host for wifi."
  Make system-as-root a phone specific thing
  Build fix for vport_trigger.
  Merge commit 'a41bdd23f3d18680f9c44ef60f65d2cc302c71af' into syncbranch
  Point region_end_offset to the padded offset. am: 3613264546
tree: 66d24aba306118e8ecddef8641d77fb8d8e14eac
  1. common/
  2. guest/
  3. host/
  4. tests/
  5. tools/
  6. Android.bp
  7. Android.mk
  8. OWNERS