Move dis/enable of mobile data to Telephony

ConnectivityService doesn't do this anymore.

bug:15077247
Change-Id: I3208c91b2c0369b594987f39ca29da7478435513

telephony/java/android/telephony/TelephonyManager.java

@@ -2249,4 +2249,25 @@ public class TelephonyManager {
         }
         return false;
     }
+
+    /** @hide */
+    @PrivateApi
+    public void setDataEnabled(boolean enable) {
+        try {
+            getITelephony().setDataEnabled(enable);
+        } catch (RemoteException e) {
+            Log.e(TAG, "Error calling ITelephony#setDataEnabled", e);
+        }
+    }
+
+    /** @hide */
+    @PrivateApi
+    public boolean getDataEnabled() {
+        try {
+            return getITelephony().getDataEnabled();
+        } catch (RemoteException e) {
+            Log.e(TAG, "Error calling ITelephony#getDataEnabled", e);
+        }
+        return false;
+    }
 }

telephony/java/com/android/internal/telephony/ITelephony.aidl

@@ -436,4 +436,18 @@ interface ITelephony {
      * @return true on success; false on any failure.
      */
     boolean setPreferredNetworkType(int networkType);
+
+    /**
+     * User enable/disable Mobile Data.
+     *
+     * @param enable true to turn on, else false
+     */
+    void setDataEnabled(boolean enable);
+
+    /**
+     * Get the user enabled state of Mobile Data.
+     *
+     * @return true on enabled
+     */
+    boolean getDataEnabled();
 }