SettingsLib: Disable USB debugging if USB signaling is off

* When developer options is turned
  off and on again,'USB debugging'
  should not be enabled if USB data
  signaling is disabled.

Manual testing:
* Disable USB data signaling
* Verify preferences are disabled
* Turn developer options off and on
* Verify preferences remain disabled

Bug: 180711035
Test: manual testing
      make RunSettingsLibRoboTests -j ROBOTEST_FILTER=EnableAdbPreferenceControllerTest
Change-Id: Ic667a8998de10f1cd8493806aa555e1b499b469f

packages/SettingsLib/src/com/android/settingslib/development/AbstractEnableAdbPreferenceController.java

@@ -86,6 +86,15 @@ public abstract class AbstractEnableAdbPreferenceController extends
         }
     }
 
+    @Override
+    protected void onDeveloperOptionsSwitchEnabled() {
+        super.onDeveloperOptionsSwitchEnabled();
+        if (isAvailable()) {
+            mPreference.setDisabledByAdmin(
+                    checkIfUsbDataSignalingIsDisabled(mContext, UserHandle.myUserId()));
+        }
+    }
+
     public void enablePreference(boolean enabled) {
         if (isAvailable()) {
             mPreference.setEnabled(enabled);