discardable shared memory: Allow resetting the allocator instance.
Make sure the allocator can be unset when it is destroyed. This is
necessary when running tests, when each test recreates the allocator
instance. In case of views_aura_mus_unittests, this causes a number of
crashing failures, causing a lot of tests to be re-run separately.
Without this fix, the test step takes ~40 seconds to complete. With this
fix, it takes ~7 seconds.
BUG=none
Review-Url: https://codereview.chromium.org/2596903002
Cr-Commit-Position: refs/heads/master@{#440270}
2 files changed
