[jfx11u] RFR: 8269115: WebView paste event contains old data

[Ambarish Rapte]

Reviewed-by: arapte, kcr

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Commit messages:
 - 8269115: WebView paste event contains old data

Changes: https://git.openjdk.java.net/jfx11u/pull/89/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jfx11u&pr=89&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8269115
  Stats: 120 lines in 3 files changed: 108 ins; 3 del; 9 mod
  Patch: https://git.openjdk.java.net/jfx11u/pull/89.diff
  Fetch: git fetch https://git.openjdk.java.net/jfx11u pull/89/head:pull/89

PR: https://git.openjdk.java.net/jfx11u/pull/89