First of all, the test fails and thus perhaps we'll have a regression. With declared scale, the test button and Unity panel button should be both blue with yellow border -- they are blue but the border of the test button is gray. If it is not a test issue, please remove "testbug" tag and summary prefix.

Then, this new test need some improvements to be useful.

(1) It should be explicitly marked "manual", otherwise it will always fail with timeout in unsupervised runs and never will run in manual runs.
(2) It should explicitly require ubuntu/unity, otherwise should pass more or less automatically.
(3) Finally, on Unity it displays an empty frame. To see the instruction, one should force repaint by resize or something.

 java/awt/image/multiresolution/MultiResolutionIcon/IconTest.java