Is this something you might be able to take a look at robhogan?

ClusterFuzz has detected this issue as fixed in range 420372:420465.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=5428275587579904

Fuzzer: inferno_layout_test_unmodified
Job Type: linux_debug_content_shell_drt
Platform Id: linux

Crash Type: ASSERT
Crash Address: 
Crash State:
  x2 >= x1
  blink::ShapeInterval<float>::ShapeInterval
  blink::OffsetPolygonEdge::clippedEdgeXRange
  
Regressed: https://cluster-fuzz.appspot.com/revisions?job=linux_debug_content_shell_drt&range=290178:290740
Fixed: https://cluster-fuzz.appspot.com/revisions?job=linux_debug_content_shell_drt&range=420372:420465

Minimized Testcase (0.42 Kb): https://cluster-fuzz.appspot.com/download/AMIfv95MGxb-2fwmrxkANVCjWK_HOWTT60Kha19JXDDY7F094wPmas2dSDXW0B_oWeZreJD7rm7dX0L93AWUiyudYOAzTe4YVxVZ2v5i-luh9mgo0omlb27RCkNUaViH0tuzjpTYbPXFi3fiTG0WrmBe9JUc6Ckuvw?testcase_id=5428275587579904

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 is verified as fixed, closing issue.

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

Removing EditIssue view restrictions from ClusterFuzz filed bugs. If you believe that this issue should still be restricted, please reapply the label.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot