RFR: 8354495: Open source several AWT DataTransfer tests

[Tejesh R]

Open source these AWT DataTransfer tests:

java/awt/datatransfer/ImageTransferCrashTest.java
java/awt/datatransfer/ClipboardPerformanceTest.java
java/awt/datatransfer/HTMLTransferConsoleOutputTest.java

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Commit messages:
 - Open source

Changes: https://git.openjdk.org/jdk/pull/24850/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=24850&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8354495
  Stats: 465 lines in 4 files changed: 465 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/24850.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/24850/head:pull/24850

PR: https://git.openjdk.org/jdk/pull/24850