Method replaceSync

test/helpers/FakeDocument.js:626–629

* Synchronously replace the stylesheet content * @param {string} cssText CSS text content

(cssText)

	 * @param {string} cssText CSS text content
	 */
	replaceSync(cssText) {
		this._cssText = cssText;
		this._parseCssRules(cssText);
	}

	/**
	 * Asynchronously replace the stylesheet content