src/vs/workbench/services/keybinding/browser/keyboardLayoutService.ts/BrowserKeyboardMapperFactoryBase/_updateKeyboardLayoutAsync
class BrowserKeyboardMapperFactoryBase:	private _updateKeyboardLayoutAsync(initialized: boolean, keyboardEvent?: IKeyboardEvent) {
		if (!initialized) {
			return;
		}

		this._getBrowserKeyMapping(keyboardEvent).then(keyMap => {
			// might be false positive
			if (this.isKeyMappingActive(keyMap)) {
				return;
			}
			this.setActiveKeyMapping(keyMap);
		});
	}