RFR: 8279614: The left line of the TitledBorder is not painted on 150 scale factor [v15]

[Alisen Chung]

> Changed the drawing area to be increased by 0.5 on the left side to prevent clipping

Alisen Chung has updated the pull request incrementally with one additional commit since the last revision:

  renamed test, renamed some methods, updated error messages, updated test

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/7449/files
  - new: https://git.openjdk.java.net/jdk/pull/7449/files/b84cf51a..e32e6c08

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=7449&range=14
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=7449&range=13-14

  Stats: 513 lines in 3 files changed: 250 ins; 259 del; 4 mod
  Patch: https://git.openjdk.java.net/jdk/pull/7449.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/7449/head:pull/7449

PR: https://git.openjdk.java.net/jdk/pull/7449