RFR: JDK-8294680: Refactor scaled border rendering [v4]

[Harshitha Onkar]

> In this fix, the common code required for scaled border rendering is unified and added to SwingUtilities3. This is achieved by adding a functional interface to SwingUtilities3 and calling the the respective paintBorder function passed as parameter to method.  
> 
> Following are the usual steps for any border scaling -
> 
> - Resetting transform.
> - Calculating new width, height, x & y-translations.
> - Perform the required border rendering.
> - And at the end restore the previous transform.
> 
> To test the refactored code, 3 separate border scaling instances were taken (details below) and the SwingUtilities3.paintBorder, (containing the common functionality) was applied. All the tests associated with the respective border changes pass.
> 
> 1. EtchedBorder - [PR#7449](https://github.com/openjdk/jdk/pull/7449) - Test: ScaledEtchedBorderTest.java
> 2. LineBorder - [PR#10681](https://github.com/openjdk/jdk/pull/10681) - Test: ScaledLineBorderTest & ScaledTextFieldBorderTest.java
> 3. JInternalFrame Border - [PR#10274](https://github.com/openjdk/jdk/pull/10274) - Test: InternalFrameBorderTest.java
> 
> The advantage of this solution is - it avoids code repetition and can be reused across all the border classes requiring border scaling fix.

Harshitha Onkar has updated the pull request incrementally with three additional commits since the last revision:

 - review changes
 - Revert "test changes"
   
   This reverts commit abed51bd420941d8efa7b779b86257978f56810e.
 - test changes

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/11571/files
  - new: https://git.openjdk.org/jdk/pull/11571/files/e753cb22..5aad627a

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=11571&range=03
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=11571&range=02-03

  Stats: 102 lines in 4 files changed: 25 ins; 27 del; 50 mod
  Patch: https://git.openjdk.org/jdk/pull/11571.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/11571/head:pull/11571

PR: https://git.openjdk.org/jdk/pull/11571