Full path of folders:
In User Data i have file CrashpadMetrics-active.pma
In Crashpad i have 2 files metadata and settings.dat
Other folders is empty.
I use Version 56.0.2924.87 x64 for Windows.
I fully clear my old non-portable chrome before installing portable version.
After i close portable chrome these folders disappears.
I also have changed 2 lines in GoogleChromePortable.ini:
Make DisableSplashScreen=true and CacheInTemp=false, other settings is set by default.