RFR: 8342565: [TestBug] StubTextLayout [v9]

[Andy Goryachev]

> Changed the StubTextLayout to use product PrismTextLayout with much simplified glyph layout (via stubbed fonts).  The new layout assumes all the glyphs are squares of font size, while the bold type face produces wider glyphs (by 1 pixel).  The default font size has changed from 10 to 12 to make it closer to win/linux.
> 
> This brings the test environment closer to the product configuration and expands the capabilities of our headless testing pipeline, which will be useful for upcoming behavior tests.
> 
> Existing tests have been adjusted/reworked mainly due to default font size change.

Andy Goryachev has updated the pull request incrementally with one additional commit since the last revision:

  Revert "fixed bad merge"
  
  This reverts commit 0e9e8ee63895bd1d976398587add5b96958d38aa.

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Changes:
  - all: https://git.openjdk.org/jfx/pull/1667/files
  - new: https://git.openjdk.org/jfx/pull/1667/files/0e9e8ee6..e18e49a5

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jfx&pr=1667&range=08
 - incr: https://webrevs.openjdk.org/?repo=jfx&pr=1667&range=07-08

  Stats: 41 lines in 2 files changed: 13 ins; 0 del; 28 mod
  Patch: https://git.openjdk.org/jfx/pull/1667.diff
  Fetch: git fetch https://git.openjdk.org/jfx.git pull/1667/head:pull/1667

PR: https://git.openjdk.org/jfx/pull/1667