Test failed intermittently on particular host. Though analysis pointed out to a test frame at left top on that host, I've updated the test for further stabilizing it. Two things done here: 1. Move the frame to center of the screen rather than left top. 2. Added tolerance checks for color comparison - this is based on analysis reports where the image didn't had exact black color which is supposed to be. So like other test cases, providing some tolerance for comparison.
------------- Commit messages: - Adding tolerance for comparison + position change Changes: https://git.openjdk.org/jdk/pull/20723/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=20723&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8338153 Stats: 10 lines in 1 file changed: 9 ins; 0 del; 1 mod Patch: https://git.openjdk.org/jdk/pull/20723.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/20723/head:pull/20723 PR: https://git.openjdk.org/jdk/pull/20723
