RFR: 8336798: DRT test cssrounding.html test for linear layout fails with WebKit 619.1 [v2]

[Jay Bhaskar]

> Issue: CSSRounding.html DRT Test fails due sub pixel layout. The fractional value adds up to 1px extra height.
> Solution: The Prefer height calculation should do flooring of fractional values. This is valid for Linear Layout which is a legacy support to most of the browsers.

Jay Bhaskar has updated the pull request incrementally with one additional commit since the last revision:

  remove extra files checked in by mistake

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Changes:
  - all: https://git.openjdk.org/jfx/pull/1514/files
  - new: https://git.openjdk.org/jfx/pull/1514/files/c88cc5c1..d166caef

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jfx&pr=1514&range=01
 - incr: https://webrevs.openjdk.org/?repo=jfx&pr=1514&range=00-01

  Stats: 517 lines in 2 files changed: 0 ins; 517 del; 0 mod
  Patch: https://git.openjdk.org/jfx/pull/1514.diff
  Fetch: git fetch https://git.openjdk.org/jfx.git pull/1514/head:pull/1514

PR: https://git.openjdk.org/jfx/pull/1514