title: When did Google Search start sending X-Frame-Options: SAMEORIGIN?
body: <p>I've got an automated test for our application that includes displaying a Google search box in an IFrame.  The test started failing recently, when a developer checked in a change that broke several other tests.  I'm starting to doubt that the change broke this test, but I'd love to know for sure.  As of right now, I can see that Google search (<em>i.e.</em>, <a href="http://www.google.com/search?q=whatever" rel="nofollow">http://www.google.com/search?q=whatever</a>) returns an <code>X-Frame-Options</code> header with <code>SAMEORIGIN</code>, which tells the browser not to display the search page in our IFrame.  Which is Google's right to insist on, and I don't mind that.  But to help me figure out if the test failure is the fault of the developer's code change or simply a coincidence, I'd love to know <strong>when did Google start sending this X-Frame-Options header?</strong>  If it happens to be around the right time, we'll just change the test to do something more appropriate.</p>