McDonald's Profits In-Line with Estimates  LOS ANGELES (Reuters) - McDonald's Corp. &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=MCD.N target=/stocks/quickinfo/fullquote"&gt;MCD.N&lt;/A&gt; on Tuesday  reported quarterly earnings that were in line with a  higher-than-expected forecast the company gave last week,  helped by strong sales in the United States and a tax benefit.