src/vs/workbench/api/common/extensionHostMain.ts/ExtensionHostMain/asBrowserUri
class ExtensionHostMain:	async asBrowserUri(uri: URI): Promise<URI> {
		const mainThreadExtensionsProxy = this._rpcProtocol.getProxy(MainContext.MainThreadExtensionService);
		return URI.revive(await mainThreadExtensionsProxy.$asBrowserUri(uri));
	}