solo.scrollDown() doesnt work on scrollable non ListViews/ScrollViews

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Create a custom View that extends from View and add a Scroller to it
2. when writing a test with given view on the screen as the only view on the 
screen
   write solo.scrollDown()
3.

What is the expected output?
solo sends scroll events to the screen

 What do you see instead?
nothing happens

What version of the product are you using?
Robotium Solo 5.2.1

On what operating system?
Android 4.4



Please provide any additional information below.
I tried to send multiple events like this
        solo.scrollDown();
        solo.scrollDown();
        solo.scrollUp();
        solo.scrollDown();
        solo.scrollDown();
and still nothing happens

Original issue reported on code.google.com by lena...@gmail.com on 22 Jan 2015 at 8:11