add ignore-certificate-error & allow-insecure-localhost. Clarify unknown option warning.

src/vs/platform/environment/common/environment.ts

@@ -87,6 +87,8 @@ export interface ParsedArgs {
 	'nolazy'?: boolean;
 	'force-device-scale-factor'?: string;
 	'force-renderer-accessibility'?: boolean;
+	'ignore-certificate-error': boolean;
+	'allow-insecure-localhost': boolean;
 }
 
 export const IEnvironmentService = createDecorator<IEnvironmentService>('environmentService');

src/vs/platform/environment/node/argv.ts

@@ -119,6 +119,8 @@ export const OPTIONS: OptionDescriptions<Required<ParsedArgs>> = {
 	'nolazy': { type: 'boolean' }, // node inspect
 	'force-device-scale-factor': { type: 'string' },
 	'force-renderer-accessibility': { type: 'boolean' },
+	'ignore-certificate-error': { type: 'boolean' },
+	'allow-insecure-localhost': { type: 'boolean' },
 	'_urls': { type: 'string[]' },
 
 	_: { type: 'string[]' } // main arguments

src/vs/platform/environment/node/argvHelper.ts

@@ -13,7 +13,7 @@ import { parseArgs, ErrorReporter, OPTIONS } from 'vs/platform/environment/node/
 function parseAndValidate(cmdLineArgs: string[], reportWarnings: boolean): ParsedArgs {
 	const errorReporter: ErrorReporter = {
 		onUnknownOption: (id) => {
-			console.warn(localize('unknownOption', "Option '{0}' is unknown. Ignoring.", id));
+			console.warn(localize('unknownOption', "Warning: '{0}' is not in the list of known options, but still passed to Electron/Chromium.", id));
 		},
 		onMultipleValues: (id, val) => {
 			console.warn(localize('multipleValues', "Option '{0}' is defined more than once. Using value '{1}.'", id, val));