Assigning to the concern owner from find it results --
The result is a list of CLs that change the crashed files. 

Author: jinsukkim
Project: chromium
Changelist: https://chromium.googlesource.com/chromium/src/+/79df88ae0437499f21dd82976ca24a0c6f2d11c7
Time: Wed Jan 04 06:26:15 2017
Lines 5160 of file web_contents_impl.cc which potentially caused crash are changed in this cl (frame #3, "content_shell!content::WebContentsImpl::SetEncoding+0x3b").
Minimum distance from crash line to modified line: 0. (file: web_contents_impl.cc, crashed on: 5160, modified: 5160).

@jinsukkim -- Could you please look into the issue, kindly re-assign if this is not related to your changes.
Thank You.

Doesn't look related to SiteIsolation.  Guessing it might be TextEncoding.

 Issue 678377  has been merged into this issue.

 Issue 678444  has been merged into this issue.

 Issue 678473  has been merged into this issue.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/8e9a8aabbde296324fa081995177dd5aac5622e4

commit 8e9a8aabbde296324fa081995177dd5aac5622e4
Author: jinsukkim <jinsukkim@chromium.org>
Date: Fri Jan 06 08:16:51 2017

Let the canonical name of invalid encoding be an empty string

Returning nullptr caused crash in fuzz testing when the call sites
attempts to create a string object out of it. Previously it was
returning an empty string(std::string()). This change makes it work
as it used to by changing the return type back to std::string.

BUG= 678359 

Review-Url: https://codereview.chromium.org/2619493002
Cr-Commit-Position: refs/heads/master@{#441904}

[modify] https://crrev.com/8e9a8aabbde296324fa081995177dd5aac5622e4/base/i18n/character_encoding.cc
[modify] https://crrev.com/8e9a8aabbde296324fa081995177dd5aac5622e4/base/i18n/character_encoding.h
[modify] https://crrev.com/8e9a8aabbde296324fa081995177dd5aac5622e4/base/i18n/character_encoding_unittest.cc

 Issue 678961  has been merged into this issue.

 Issue 679289  has been merged into this issue.

ClusterFuzz has detected this issue as fixed in range 441510:441524.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=4824406632431616

Fuzzer: inferno_twister
Job Type: windows_syzyasan_content_shell
Platform Id: windows

Crash Type: UNKNOWN
Crash Address: 
Crash State:
  content::WebContentsImpl::SetEncoding
  content::WebContentsImpl::UpdateEncoding
  content::RenderFrameHostImpl::OnUpdateEncoding
  
Memory Tool: SYZYASAN

Regressed: https://cluster-fuzz.appspot.com/revisions?job=windows_syzyasan_content_shell&range=441240:441358
Fixed: https://cluster-fuzz.appspot.com/revisions?job=windows_syzyasan_content_shell&range=441510:441524

Minimized Testcase (0.03 Kb):
Download: https://cluster-fuzz.appspot.com/download/AMIfv95KMX_GmO5DbhIpsRdcNBMUzLIzSH0fWRRGItNui2GAFXxzFCXos4ee-WyqddIzD0HBFoeHzIFKgExjnpl3llVkzpwLn6K_EIEqMk2rJnszkoipr5zKI4oTzRibXhTPWSIVoE4SXf-89RI4y8RvYnqBtFHsVsU71pmHpIMUN-PDDTSdG4k2gNXyy1pNnY6OwdUNDI_-WHayBNbUu18l03fazgLpyprI6xhsELWh3VEBT6tcjjceEPfNKQZe65rwhUgKOD_PBImtmG6qLTGRcNau8jHisHSUrNa_sNs2L-ZFIHfISb_8hEOy5o97vdXB_n0wVaNxFb_envvFUvSqyeG7gQ31U5vjp_PdcL1U3FwVlrvrxzI?testcase_id=4824406632431616
<meta charset=iso-2022-cn>


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.