RFR: 8267926: AsyncLogGtest.java fails on assert with: decorator was not part of the decorator set specified at creation. [v8]

[Xin Liu]

> The root cause of the intermittent failure is that _decorators in LogDecorations 
> may be inconsistent with LogOutput::_decorators. It could happen when gtest disables a
> Log output via set_log_config(TestLogFileName, "all=off").
> 
> Since we copy the entire logDecorations, it's reasonable to copy _decorator as well. 
> LogDecorator is a bitmask of uint. It's even smaller than a reference on LP64 platforms.

Xin Liu has updated the pull request incrementally with one additional commit since the last revision:

  Revert back to the basic bugfix and remove AsyncLogGtest.java from ProblemList.

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

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/4257/files
  - new: https://git.openjdk.java.net/jdk/pull/4257/files/07a79051..199f2535

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=4257&range=07
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=4257&range=06-07

  Stats: 171 lines in 9 files changed: 9 ins; 154 del; 8 mod
  Patch: https://git.openjdk.java.net/jdk/pull/4257.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/4257/head:pull/4257

PR: https://git.openjdk.java.net/jdk/pull/4257