Detailed report: https://clusterfuzz.com/testcase?key=5740384181026816

Fuzzer: libFuzzer_appcache_fuzzer
Fuzz target binary: appcache_fuzzer
Job Type: libfuzzer_chrome_asan_debug
Platform Id: linux

Crash Type: CHECK failure
Crash Address: 
Crash State:
  !connected. AppCacheBackend::GetStatusCallback was destroyed without first eithe
  blink::mojom::AppCacheBackend_GetStatus_ProxyToResponder::OnIsConnectedComplete
  void base::internal::FunctorTraits<void
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan_debug&range=605707:605715

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5740384181026816

Issue filed automatically.

See https://github.com/google/clusterfuzz-tools for instructions to reproduce this bug locally.