Merge "Adding API stubs for application network routing" am: 20a9e59e25 am: e92d8a7865 am: ab220aa956 am: 15c0e3c9d5

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1478963

Change-Id: Icb5f6e6124d23093ff7051d27d2fd4b9e3a1f72c