UserAgent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3355.4 Safari/537.36

Steps to reproduce the problem:
1. Upgrade working 66.0.3355.4 to 66.0.3359.22
2. Restart/start Chrome (even with --no-experiments and --disable-extensions --disable-plugins)
3. Chrome flashes open then closes and can see crash reporter process running report
4. Note this is on almost a dozen Win7x64 all coming from 66.0.3355.4 and NONE can start once upgraded to 66.0.3359.22.  NOT a profile issue since 100% of them then open again successfully without any issues upon rolling back manually to saved 66.0.3355.4.

What is the expected behavior?
Normal upgrade experience

What went wrong?
EVERYTHING - Browser no longer opens at all.

Crashed report ID: No had to roll back just to open chrome but have debug log and have full crash logs

How much crashed? Whole browser

Is it a problem with a plugin? N/A 

Did this work before? Yes 

Chrome version: 66.0.3359.22  Channel: dev
OS Version: 6.1 (Windows 7, Windows Server 2008 R2)
Flash Version: 

Yes - on multiple machines all logged this in their local debug logs upon self-update to 66.0.3359.22 indicating errors:

[0311/180225.290:ERROR:exception_snapshot_win.cc(87)] thread ID 3148 not found in process
[0311/180225.291:WARNING:crash_report_exception_handler.cc(60)] ProcessSnapshotWin::Initialize failed
[0312/093332.698:ERROR:exception_snapshot_win.cc(87)] thread ID 7476 not found in process
[0312/093332.699:WARNING:crash_report_exception_handler.cc(60)] ProcessSnapshotWin::Initialize failed
[0312/132518.772:ERROR:exception_handler_server.cc(524)] ConnectNamedPipe: The pipe is being closed. (0xE8)
[0312/162927.372:ERROR:exception_handler_server.cc(524)] ConnectNamedPipe: The pipe is being closed. (0xE8)
[0312/163109.778:ERROR:exception_handler_server.cc(524)] ConnectNamedPipe: The pipe is being closed. (0xE8)
[0312/163128.681:ERROR:exception_handler_server.cc(524)] ConnectNamedPipe: The pipe is being closed. (0xE8)
[0312/182850.314:ERROR:exception_handler_server.cc(524)] ConnectNamedPipe: The pipe is being closed. (0xE8)
[0313/070226.465:ERROR:exception_handler_server.cc(524)] ConnectNamedPipe: The pipe is being closed. (0xE8)
[0313/220531.459:ERROR:exception_handler_server.cc(524)] ConnectNamedPipe: The pipe is being closed. (0xE8)
[0315/021103.799:ERROR:exception_handler_server.cc(524)] ConnectNamedPipe: The pipe is being closed. (0xE8)
[0316/195814.983:ERROR:exception_handler_server.cc(524)] ConnectNamedPipe: The pipe is being closed. (0xE8)
[0316/222452.042:ERROR:exception_handler_server.cc(524)] ConnectNamedPipe: The pipe is being closed. (0xE8)
[0317/010901.323:ERROR:exception_handler_server.cc(524)] ConnectNamedPipe: The pipe is being closed. (0xE8)
[0321/111204.551:ERROR:process_info.cc(343)] VirtualQueryEx: Access is denied. (0x5)
[0321/111204.553:ERROR:process_info.cc(564)] ReadMemoryInfo failed
[0321/111204.553:ERROR:process_reader_win.cc(233)] ReadMemory at 0x7feced029a0 of 12 bytes failed: Only part of a ReadProcessMemory or WriteProcessMemory request was completed. (0x12B)
[0321/111204.553:WARNING:process_snapshot_win.cc(68)] ReadMemory ExceptionInformation failed
[0321/111204.553:WARNING:crash_report_exception_handler.cc(60)] ProcessSnapshotWin::Initialize failed
[0321/111204.553:ERROR:scoped_process_suspend.cc(38)] NtResumeProcess: An attempt was made to access an exiting process.  (0xc000010a)
[0328/145150.281:ERROR:exception_snapshot_win.cc(87)] thread ID 8812 not found in process
[0328/145150.282:WARNING:crash_report_exception_handler.cc(60)] ProcessSnapshotWin::Initialize failed
[0428/082634.204:ERROR:prune_crash_reports.cc(58)] Database Pruning: Failed to remove report 29e7881d-1908-4733-9e56-c57c3870628b
[0428/082634.206:ERROR:prune_crash_reports.cc(58)] Database Pruning: Failed to remove report 8555e69d-f5a3-44ab-bf7d-ce99762576f4
[0428/082634.207:ERROR:prune_crash_reports.cc(58)] Database Pruning: Failed to remove report 5509cdd6-f881-4ca0-a166-0ed8870c6dfa
[0604/063826.507:ERROR:process_reader_win.cc(242)] ReadMemory at 0x3f7fff80 of 512 bytes failed: Only part of a ReadProcessMemory or WriteProcessMemory request was completed. (0x12B)
[0604/063826.508:ERROR:crash_report_exception_handler.cc(116)] WriteEverything failed
[0615/002351.841:ERROR:registration_protocol_win.cc(56)] CreateFile: The system cannot find the file specified. (0x2)
[0814/155546.918:ERROR:process_info.cc(380)] UncheckedAllocate
[0814/155546.968:ERROR:process_info.cc(380)] UncheckedAllocate
[0309/131307.933:ERROR:process_reader_win.cc(242)] ReadMemory at 0x12ffff93 of 512 bytes failed: Only part of a ReadProcessMemory or WriteProcessMemory request was completed. (0x12B)
[0309/131307.933:ERROR:crash_report_exception_handler.cc(116)] WriteEverything failed
[0309/131423.950:ERROR:process_reader_win.cc(242)] ReadMemory at 0x17ffff98 of 512 bytes failed: Only part of a ReadProcessMemory or WriteProcessMemory request was completed. (0x12B)
[0309/131423.951:ERROR:crash_report_exception_handler.cc(116)] WriteEverything failed

But again - simply renaming the application folder to application.old and restoring 66.0.3355.4's application folder in-place results in Chrome's immediate opening.