Does not fully disable internet

```
What steps will reproduce the problem?
1. just tick browser for data on whitelist
2. check money
3. open a free webpage
4. go to data usage in settings -> (AndroidOS!!!!!! <- not disableable!)
5. disable data and check money

What is the expected output? What do you see instead?
no money lost because the page s free. AndroidOS downloading stuff -> losing
money.

What version of the product are you using? On what operating system?
latest to date 15.08.2012, Android 4.1.1 CM10 (same on Android 4.0.4 CM9)

Please provide any additional information below.

Please make the option to block AndroidOS from using mobile data! Android
System has nothing checked on the white list for me but I still lose money
though AndroidOS!....
```

Original issue reported on code.google.com by `Crack...@gmail.com` on 15 Aug 2012 at 1:25

Reproduce the whitelist and data-usage steps on Android 4.1.1 CM10 or Android 4.0.4 CM9, then trace how AndroidOS traffic is handled. No source file, test, or entry point is named in the report. Done means Android System traffic can be blocked by the whitelist and no unexpected mobile-data charge occurs.

Written by the indexing model from the issue text.