Based on Code search on the file and recent changes made to the file "resource_dispatcher_host_impl.cc" suspecting the below.
Review-Url: https://codereview.chromium.org/2715423003
yhirano@: Could you please take a look ino this if its related to your change.

ClusterFuzz has detected this issue as fixed in range 455091:455394.

Detailed report: https://clusterfuzz.com/testcase?key=5883434229825536

Fuzzer: jsbell_serviceworker
Job Type: linux_asan_chrome_mp
Platform Id: linux

Crash Type: UNKNOWN READ
Crash Address: 0x000000000040
Crash State:
  net::URLRequestContext::CreateRequest
  content::ResourceDispatcherHostImpl::ContinuePendingBeginRequest
  content::ResourceDispatcherHostImpl::BeginRequest
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_asan_chrome_mp&range=454177:454196
Fixed: https://clusterfuzz.com/revisions?job=linux_asan_chrome_mp&range=455091:455394

Reproducer Testcase: https://clusterfuzz.com/download/AMIfv97vFlkxHiG0oyKhmSfdE4BBQMQjOLuT7EB0daljswiU-xaZoF_YVkAxcMxy6EiI54q8CbTD8IXdX1lxw9h0alCQFOgRp6Njp7Tyu-OaAjss1Dus5ipLZxtJxD2kAfnf2xktQENIahL8MTKID0kYt0pI0Otkq2RTLuZM9KyQmNUisDjDQ8JwryqhUJpaLlSWG1MVb7eEtrNfJonrt4vrioBD2Id357su3JoxWi6lJDN1f_YprH0rGaKIowmu4mDiHq_vPeo0dci5u-MpgWuv7BUPsLmdCHIcb0RbnWJBBDbDWkl-T1pmiECrJPejPP4qQE2y6TOgVNMoyB04NU4yDD4xWNaAUj6dE70RjiRzxgokL2MWEd4?testcase_id=5883434229825536


Additional requirements: Requires Gestures

See https://dev.chromium.org/Home/chromium-security/bugs/reproducing-clusterfuzz-bugs for more information.

If you suspect that the result above is incorrect, try re-doing that job on the test case report page.

ClusterFuzz testcase 5883434229825536 is verified as fixed, so closing issue.

If this is incorrect, please add ClusterFuzz-Wrong label and re-open the issue.