[jdk17] RFR: 8269092: Add OldObjectSampleEvent.allocationSize field

[Ludovic Henry]

8269092: Add OldObjectSampleEvent.allocationSize field

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Commit messages:
 - 8269092: Add OldObjectSampleEvent.allocationSize field

Changes: https://git.openjdk.java.net/jdk17/pull/145/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk17&pr=145&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8269092
  Stats: 126 lines in 3 files changed: 126 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk17/pull/145.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk17 pull/145/head:pull/145

PR: https://git.openjdk.java.net/jdk17/pull/145