[jfx25u] RFR: 8350479: SW pipeline should use default pipeline in Glass

[Ambarish Rapte]

This is an important follow-up metal related change, to use Metal pipeline for bliting the frame buffer with SW pipeline.

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Commit messages:
 - Backport f8f466f9038b02b1e100cccf25a9ba58e7a06157

Changes: https://git.openjdk.org/jfx25u/pull/31/files
  Webrev: https://webrevs.openjdk.org/?repo=jfx25u&pr=31&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8350479
  Stats: 88 lines in 9 files changed: 58 ins; 16 del; 14 mod
  Patch: https://git.openjdk.org/jfx25u/pull/31.diff
  Fetch: git fetch https://git.openjdk.org/jfx25u.git pull/31/head:pull/31

PR: https://git.openjdk.org/jfx25u/pull/31