Use ONC for Cellular APN and SimLock in Settings

components/onc/onc_constants.cc

Index: components/onc/onc_constants.cc
diff --git a/components/onc/onc_constants.cc b/components/onc/onc_constants.cc
index 4909aedb2e3b3b0543ab81edc95e126898806d23..b7748b6c58a1322e879a61c62ac20f0a37d484b6 100644
--- a/components/onc/onc_constants.cc
+++ b/components/onc/onc_constants.cc
@@ -91,6 +91,7 @@ const char kHomeProvider[] = "HomeProvider";
 const char kICCID[] = "ICCID";
 const char kIMEI[] = "IMEI";
 const char kIMSI[] = "IMSI";
+const char kLastGoodAPN[] = "LastGoodAPN";
 const char kManufacturer[] = "Manufacturer";
 const char kMDN[] = "MDN";
 const char kMEID[] = "MEID";
@@ -115,6 +116,7 @@ const char kName[] = "Name";
 }  // namespace cellular_provider
 
 namespace cellular_apn {
+const char kAccessPointName[] = "AccessPointName";
 const char kName[] = "Name";
 const char kUsername[] = "Username";
 const char kPassword[] = "Password";