[8u40] Request for approval: 8051838 [Findbugs] sun.awt.image.MultiResolutionCachedImage expose internal representation

[Alexander Scherbatiy]

Hello,

Could you approve the direct backport of the fix to JDK 8u-dev.

The bug: https://bugs.openjdk.java.net/browse/JDK-8051838
The JDK 9 changeset: 
http://hg.openjdk.java.net/jdk9/client/jdk/rev/9cf126db00b4

Thanks,
Alexandr.