Failure looks like so:

thakis@thakis:~/src/chrome/src$ out/gn/unit_tests --gtest_filter=ProfileDestroyer*
IMPORTANT DEBUGGING NOTE: batches of tests are run inside their
own process. For debugging a test inside a debugger, use the
--gtest_filter=<your_test_name> flag along with
--single-process-tests.
Using sharding settings from environment. This is shard 0/1
Using 1 parallel jobs.
Note: Google Test filter = ProfileDestroyerTest.DelayProfileDestruction:ProfileDestroyerTest.DelayOriginalProfileDestruction
[==========] Running 2 tests from 1 test case.
[----------] Global test environment set-up.
[----------] 2 tests from ProfileDestroyerTest
[ RUN      ] ProfileDestroyerTest.DelayProfileDestruction
../../chrome/browser/profiles/profile_destroyer_unittest.cc:114: Failure
Value of: off_the_record_profile_->destroyed_otr_profile_
  Actual: false
Expected: true
[  FAILED  ] ProfileDestroyerTest.DelayProfileDestruction (948 ms)
[ RUN      ] ProfileDestroyerTest.DelayOriginalProfileDestruction
../../chrome/browser/profiles/profile_destroyer_unittest.cc:137: Failure
Expected: (TestingOriginalDestructionProfile::kNull) != (TestingOriginalDestructionProfile::living_instance_), actual: NULL vs NULL
../../chrome/browser/profiles/profile_destroyer_unittest.cc:154: Failure
Value of: TestingOriginalDestructionProfile::living_instance_
  Actual: NULL
Expected: main_profile
Which is: 0x10e0aa497120
Received signal 11 <unknown> 000000000000
#0 0x0000039682a7 base::debug::StackTrace::StackTrace()
#1 0x000003967e1f base::debug::(anonymous namespace)::StackDumpSignalHandler()
#2 0x7f7ebc996330 <unknown>
#3 0x0000039ade50 base::SupportsUserData::GetUserData()
#4 0x000002468b07 content::(anonymous namespace)::GetSiteProcessMapForBrowserContext()
#5 0x00000245fb66 content::RenderProcessHostImpl::UnregisterHost()
#6 0x0000031ab233 content::MockRenderProcessHost::Cleanup()
#7 0x000000b97b7a ProfileDestroyerTest_DelayOriginalProfileDestruction_Test::TestBody()
#8 0x000003720fe6 testing::Test::Run()
#9 0x000003721ac0 testing::TestInfo::Run()
#10 0x000003721fe7 testing::TestCase::Run()
#11 0x000003729027 testing::internal::UnitTestImpl::RunAllTests()
#12 0x000003728ca7 testing::UnitTest::Run()
#13 0x000003110de1 base::TestSuite::Run()
#14 0x00000311280a base::(anonymous namespace)::LaunchUnitTestsInternal()
#15 0x0000031126d4 base::LaunchUnitTests()
#16 0x00000310bd9a main
#17 0x7f7eb60fef45 __libc_start_main
#18 0x000000648e4d <unknown>
  r8: 000010e0a925cd80  r9: 000000000000000b r10: 0000000000000004 r11: 0000000000000004
 r12: 000010e0a90f9120 r13: 00000000089e4628 r14: 000010e0aa497120 r15: 0000000000000004
  di: 000010e0aa497130  si: 000000000768ec60  bp: 000000005902054a  bx: 000010e0aa468540
  dx: 666f2065756c6156  ax: 666f2065756c6156  cx: 000010e0aa497130  sp: 00007ffea0106528
  ip: 00000000039ade50 efl: 0000000000010206 cgf: 0000000000000033 erf: 0000000000000000
 trp: 000000000000000d msk: 0000000000000000 cr2: 0000000000000000
[end of stack trace]
Calling _exit(1). Core file will not be generated.
[1/2] ProfileDestroyerTest.DelayProfileDestruction (948 ms)
[2/2] ProfileDestroyerTest.DelayOriginalProfileDestruction (CRASHED)
1 test failed:
    ProfileDestroyerTest.DelayProfileDestruction (../../chrome/browser/profiles/profile_destroyer_unittest.cc:87)
1 test crashed:
    ProfileDestroyerTest.DelayOriginalProfileDestruction (../../chrome/browser/profiles/profile_destroyer_unittest.cc:117)

Hrm, not sure why I'm the owner?

I can't remember and can't figure out why I made you the owner; doesn't look like a very good choice now that I try to retrace my steps, sorry :-)

mad, you added the test in https://codereview.chromium.org/9420036 but didn't add it to any build file back then -- can I give this to you?

Ho, yeah, sure, I don't remember why this was never actually turned on. I can take a look and see if it's not rotten too much since then.