src/vs/platform/webview/electron-main/webviewProtocolProvider.ts/WebviewProtocolProvider/constructor
class WebviewProtocolProvider:	constructor() {
		super();

		const sess = session.fromPartition(webviewPartitionId);

		// Register the protocol loading webview html
		const webviewHandler = this.handleWebviewRequest.bind(this);
		protocol.registerFileProtocol(Schemas.vscodeWebview, webviewHandler);
		sess.protocol.registerFileProtocol(Schemas.vscodeWebview, webviewHandler);
	}