[jdk8u-dev] RFR: 8068305: [TEST_BUG] Test java/awt/Mixing/HWDisappear.java fails with GTKL&F [v4]

[Sergey Bylokhov]

> Hi all,
> 
> This pull request contains a backport of commit [bc24a0ce](https://github.com/openjdk/jdk/commit/bc24a0ce18373217b97dc3a8f4071a7ffc92691d) from the [openjdk/jdk](https://git.openjdk.org/jdk) repository.
> 
> The commit being backported was authored by Alexander Zvegintsev on 13 Jan 2015 and was reviewed by Alexander Scherbatiy and Sergey Bylokhov.
> 
> Thanks!

Sergey Bylokhov has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains four additional commits since the last revision:

 - Merge branch 'openjdk:master' into backport-mrserb-bc24a0ce-master
 - Merge branch 'openjdk:master' into backport-mrserb-bc24a0ce-master
 - Merge branch 'openjdk:master' into backport-mrserb-bc24a0ce-master
 - Backport bc24a0ce18373217b97dc3a8f4071a7ffc92691d

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

Changes:
  - all: https://git.openjdk.org/jdk8u-dev/pull/575/files
  - new: https://git.openjdk.org/jdk8u-dev/pull/575/files/d9ff1400..3ba27a88

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk8u-dev&pr=575&range=03
 - incr: https://webrevs.openjdk.org/?repo=jdk8u-dev&pr=575&range=02-03

  Stats: 1375 lines in 39 files changed: 1150 ins; 145 del; 80 mod
  Patch: https://git.openjdk.org/jdk8u-dev/pull/575.diff
  Fetch: git fetch https://git.openjdk.org/jdk8u-dev.git pull/575/head:pull/575

PR: https://git.openjdk.org/jdk8u-dev/pull/575