@FixWhenMinSdkVersion(14)
  public static void tapDialogPositiveButton(Instrumentation instrumentation) {
    selectDialogButton(instrumentation);

    instrumentation.sendKeyDownUpSync(KeyEvent.KEYCODE_DPAD_RIGHT);
    instrumentation.sendKeyDownUpSync(KeyEvent.KEYCODE_DPAD_CENTER);
  }
Taps the positive button of a currently displayed dialog. This method assumes that a button of
the dialog is currently selected.

@see #tapDialogNegativeButton(Instrumentation)
javatests/com/google/android/apps/authenticator/testing/TestUtilities.java