PartitionAllocTest.MappingCollision still not working on Windows.
PartitionAllocTest.MappingCollision still not working on Windows.

Disable it.

TBR=tsepez@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/106743004

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@163282 bbb929c8-8fbe-4397-9dbb-9b2b20218538

primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs