<AWT Dev> RFR: 8212226 SurfaceManager throws "Invalid Image variant" for MultiResolutionImage (Windows)

[Alexander Zuev]

Hello,

   please review my fix for the issue 8212226: SurfaceManager throws 
"Invalid Image variant" for MultiResolutionImage (Windows)

   Bug: https://bugs.openjdk.java.net/browse/JDK-8212226
   Fix: http://cr.openjdk.java.net/~kizune/8212226/webrev

   There is no regression test since even for the manual regression test 
the setup would be quite difficult - you will have to have not just the 
multi-monitor configuration, but the configuration where on different 
displays you have different magnification factor. I tried to simulate 
different magnification factor by changing sun.java2d.uiScale parameter 
but that does not trigger the problem, image gets repainted correctly 
and no exception happens.

/Alex