Processing crash: android.support.v4.app.DialogFragment$DialogStyle not found

When I use support library v22.2, I got following error.

```
Stacktrace: com.sun.tools.javac.code.Symbol$CompletionFailure: android.support.v4.app.DialogFragment$DialogStyleのクラス・ファイルが見つかりません
```

`のクラス・ファイルが見つかりません` is `Class, File not found.`

support.v4.app.DialogFragment on v22.1 or earlier seems to have `private @interface DialogStyle {}`
But it seems to be removed on v22.2.
