Add javadoc comments mentioning ConnectivityManager API permissions.

Also move permissions comments above @param and @return to fix indent.

bug:20499587
Change-Id: If82ff2367fdbce06e696e494439b31cb100d768f
1 file changed
tree: 3851620ebbd18e0068320d40b8f7be470211710e
  1. core/
  2. services/
  3. tests/