[jfx11u] RFR: 8280020: Underline and line-through not straight in WebView

[Ambarish Rapte]

Reviewed-by: kcr, arapte

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Commit messages:
 - 8280020: Underline and line-through not straight in WebView

Changes: https://git.openjdk.java.net/jfx11u/pull/90/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jfx11u&pr=90&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8280020
  Stats: 192 lines in 2 files changed: 182 ins; 2 del; 8 mod
  Patch: https://git.openjdk.java.net/jfx11u/pull/90.diff
  Fetch: git fetch https://git.openjdk.java.net/jfx11u pull/90/head:pull/90

PR: https://git.openjdk.java.net/jfx11u/pull/90