Copy chrome preferences to seeded data dir #44032
Merged
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Description
Chrome stores preferences such as window size in data-dir/Default/preferences. This is occasionally updated by a running chrome process, seems like every few seconds. To allow multiple chrome instances to run while still keeping them in temp directories, we can save the preferences file under .dart_tool, and copy it back and forth between the temp/project dir.
Sometime this file will indicate that the browser crashed. This also removes that info to prevent the warning popup on next run.
Fixes #38537