In a quick look at the code, it appears an integer overflow here would result in us just not drawing the filter- not put us in a compromised state.  I think this is a won't fix issue, but cc Robert/Mike to double check my assessment.

ClusterFuzz has detected this issue as fixed in range 460819:460851.

Detailed report: https://clusterfuzz.com/testcase?key=5031658865819648

Fuzzer: ifratric-browserfuzzer-v3
Job Type: linux_ubsan_chrome
Platform Id: linux

Crash Type: Integer-overflow
Crash Address: 
Crash State:
  SkDropShadowImageFilter::onFilterImage
  SkImageFilter::filterImage
  SkImageFilter::filterInput
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_ubsan_chrome&range=441240:441358
Fixed: https://clusterfuzz.com/revisions?job=linux_ubsan_chrome&range=460819:460851

Reproducer Testcase: https://clusterfuzz.com/download/AMIfv94eGuzE15NExkPCJ_qWKFsVWeRiJjoxj2cpJLl-F5MeGW_RrolMUoR-uNtgoOTZuVctbDX5AiqhLsMYyS0nHKqJwLxK0_C2BvhsbaSoUjCNlJwfY1ZRZ7Ykjt6kihXawkq-HHiLaLna4gCt6zKWuK7dTitnTEvJIaVdJqwiiE1dGJAfh9YKDRK76l4TDjK_7VK4rQghvV-ctrzdedbQmG0I9AF1UD3PVyl4y3fAM4WzVXBLmJYTC5kKYNFf2OhqRuOcq8ooSAbv25e9QHaIQuECInMmAONIkqHL4TuXPkBAirqlvymxcSDaitEf-Qb5P2nsRJ0oBuQMgUuExnJV4N0nC1hw8LXcv5KbPOC9d_lJMaIW5-0?testcase_id=5031658865819648


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 5031658865819648 is verified as fixed, so closing issue.

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