This fixes a hack that was added when NetworkLocationManager was moved out of the framework.
This also lays the groundwork for supporting location providers outside of the system process.
BUG=1729031
Automated import of CL 144663
IExtendedNetworkService has 4 MMI service interface used by PhoneUtils to put DCM related nw service.
void setMmiString(String number);
CharSequence getMmiRunningText();
CharSequence getUserMessage(CharSequence text);
void clearMmiString();
And the service is bind via "com.android.ussd.IExtendedNetworkService".
Original author: johnwang
Merged from: //branches/cupcake/...
Automated import of CL 143181
