RFR: 8281569: Create tests for Frame.setMinimumSize() method [v2]

[Srinivas Mandalika]

> Create tests for setMinimumSize functionality
> Create a test which verifies that on increasing the Frame's minimumSize, it gets reflected in the subsequent getSize call
> Create a test which verifies that on frame resizes back to minimumSize on calling pack.

Srinivas Mandalika has updated the pull request incrementally with one additional commit since the last revision:

  Review comments fixed: frame created/getSize called on EDT, volatile dimension, static doTest...

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

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/7444/files
  - new: https://git.openjdk.java.net/jdk/pull/7444/files/312eb73b..f679256f

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=7444&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=7444&range=00-01

  Stats: 31 lines in 2 files changed: 16 ins; 3 del; 12 mod
  Patch: https://git.openjdk.java.net/jdk/pull/7444.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/7444/head:pull/7444

PR: https://git.openjdk.java.net/jdk/pull/7444