FYI: 8241490: Add large text performance tests in RenderPerfTest

[Jayathirth D V]

Adding new test cases to verify performance of non cache text rendering.
All text >32 pixel size goes through non cache approach.

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Commit messages:
 - 8241490: Add large text performance tests in RenderPerfTest

Changes: https://git.openjdk.java.net/lanai/pull/12/files
 Webrev: https://webrevs.openjdk.java.net/lanai/12/webrev.00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8241490
  Stats: 33 lines in 1 file changed: 32 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/lanai/pull/12.diff
  Fetch: git fetch https://git.openjdk.java.net/lanai pull/12/head:pull/12

PR: https://git.openjdk.java.net/lanai/pull/12