RFR: 8191406: [hidpi] sun/java2d/SunGraphics2D/DrawImageBilinear.java test fails [v4]

[Jayathirth D V]

> This test was failing because of timing or color difference issues.
> Updated test to:
> 
> 1) Use EDT for UI drawing instead of manual synchronisation
> 2) Use Robot.waitForIdle before screen capture
> 3) Increase color tolerance delta from 1 to 5
> 4) Use undecorated frame and explicitly set background color and move the frame to top
> 5) Cleanup to remove not needed flags and java options
> 
> After these changes test passes on all platforms in CI except Linux. For Linux it looks like product issue so i have raised : https://bugs.openjdk.org/browse/JDK-8297175

Jayathirth D V has updated the pull request incrementally with two additional commits since the last revision:

 - Exit on non creation of GUI
 - Remove extra tolerance and background color

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/11201/files
  - new: https://git.openjdk.org/jdk/pull/11201/files/60c75caa..78eb2906

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=11201&range=03
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=11201&range=02-03

  Stats: 22 lines in 1 file changed: 2 ins; 18 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/11201.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/11201/head:pull/11201

PR: https://git.openjdk.org/jdk/pull/11201