The path to a separate executable that will be launched for sub-processes.
If this value is empty on Windows or Linux then the main process
executable will be used. If this value is empty on macOS then a helper
executable must exist at "Contents/Frameworks/<app>
Helper.app/Contents/MacOS/<app> Helper" in the top-level app bundle. See
the comments on CefExecuteProcess() for details. If this value is
non-empty then it must be an absolute path. Also configurable using the
"browser-subprocess-path" command-line switch.
The path to a separate executable that will be launched for sub-processes. If this value is empty on Windows or Linux then the main process executable will be used. If this value is empty on macOS then a helper executable must exist at "Contents/Frameworks/<app> Helper.app/Contents/MacOS/<app> Helper" in the top-level app bundle. See the comments on CefExecuteProcess() for details. If this value is non-empty then it must be an absolute path. Also configurable using the "browser-subprocess-path" command-line switch.