FYI: 8242079: Update RenderPerf LCD Test to ensure LCD code path is used

[Prasanta Sadhukhan]

t is found that RenderPerf Test testTextBubblesLCD follows grayscale code path and not LCD code path so it will test
correct LCD text performance.

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

Commit messages:
 - 8242079: Update RenderPerf LCD Test to ensure LCD code path is used
 - 8242079: Update RenderPerf LCD Test to ensure LCD code path is used

Changes: https://git.openjdk.java.net/lanai/pull/20/files
 Webrev: https://webrevs.openjdk.java.net/lanai/20/webrev.00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8242079
  Stats: 381 lines in 2 files changed: 379 ins; 0 del; 2 mod
  Patch: https://git.openjdk.java.net/lanai/pull/20.diff
  Fetch: git fetch https://git.openjdk.java.net/lanai pull/20/head:pull/20

PR: https://git.openjdk.java.net/lanai/pull/20