RFR: 8246194: Performance of Mix.Balls decreases when Rendering Quality option is Selected

[Jayathirth D V]

Whenever we enable rendering quality we are hitting shape clip code and in our shape clip code we have forced
synchronous render calls which decreases the performance.

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Commit messages:
 - 8246194: Performance of Mix.Balls decreases when Rendering Quality option is Selected

Changes: https://git.openjdk.java.net/lanai/pull/106/files
 Webrev: https://webrevs.openjdk.java.net/?repo=lanai&pr=106&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8246194
  Stats: 5 lines in 1 file changed: 0 ins; 5 del; 0 mod
  Patch: https://git.openjdk.java.net/lanai/pull/106.diff
  Fetch: git fetch https://git.openjdk.java.net/lanai pull/106/head:pull/106

PR: https://git.openjdk.java.net/lanai/pull/106