Add RequestRemoveNetworkService and RequestNetworkServiceDisconnect

BUG=chromium-os:18186
TEST=ensure libcros and chrome compile

Change-Id: I71356b1179e400beef52c638f7c821c07025c40a
Reviewed-on: http://gerrit.chromium.org/gerrit/6963
Tested-by: Steven Bennetts <stevenjb@chromium.org>
Reviewed-by: Satoru Takabayashi <satorux@chromium.org>
4 files changed