electronでオプション起動

electron . --widevine-cdm-path /Applications/Google\ Chrome.app/Contents/Versions/56.0.2924.87/Google\ Chrome\ Framework.framework/Libraries/WidevineCdm/_platform_specific/mac_x64/widevinecdmadapter.plugin  --widevine-cdm-version 1.4.8.962

widevine-cdmはChromeのパスで指定。