RFR: JDK-8307128: Open source some drag and drop tests 4

[Phil Race]

On Mon, 8 May 2023 18:31:26 GMT, Sergey Bylokhov <serb at openjdk.org> wrote:

>> added DnD tests
>
> test/jdk/java/awt/dnd/MozillaDnDTest.java line 177:
> 
>> 175:     public void start() {
>> 176:         // Solaris/Linux-only test
>> 177:         if (System.getProperty("os.name").startsWith("Windows")) {
> 
> Can we use OSInfo here?

Unless a test already needs some other utils I prefer to avoid such minor dependencies which prevent you from running the test outside of jtreg.

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PR Review Comment: https://git.openjdk.org/jdk/pull/13765#discussion_r1188903351