RFR: 8353958: Open source several AWT ScrollPane tests - Batch 2

[Tejesh R]

Open source these AWT ScrollPane tests:

java/awt/ScrollPane/ScrollPaneSize/ScrollPaneSize.java
java/awt/ScrollPane/ScrollPaneAsNeededTest/ScrollPaneAsNeededTest.java
java/awt/ScrollPane/ScrollPaneComponentTest/ScrollPaneComponentTest.java
java/awt/ScrollPane/ScrollPaneScrollType/ScrollPaneEventType.java
java/awt/ScrollPane/ScrollPanechildViewportTest/ScrollPanechildViewportTest.java

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Commit messages:
 - Open source

Changes: https://git.openjdk.org/jdk/pull/24647/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=24647&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8353958
  Stats: 520 lines in 6 files changed: 520 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/24647.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/24647/head:pull/24647

PR: https://git.openjdk.org/jdk/pull/24647