chromiumembedded
chrome: Support app restart for things like Chromium version downgrade
Is your feature request related to a problem? Please describe.
When building Chromium with enable_downgrade_processing=true (default value) the app will attempt to restart if a version downgrade that requires User Data changes is detected. This relaunches chrome.exe via RelaunchChromeBrowserImpl (similar on other platforms).
Describe the solution you'd like Modify the Chromium code to relaunch the app's main executable by default, or execute a client callback for custom handling.
Describe alternatives you've considered
Set enable_downgrade_processing=false to disable downgrade. We'll do this as a temporary solution in M120.
Additional context The same solution might also work for #3561.
On Windows, it might also be nice to enable the functionality that restarts the app after a crash or Windows update.
When supported, also add RESULT_CODE_DOWNGRADE_AND_RELAUNCH to cef_resultcode_t.