No bug - Request a longer timeout for test_CrossSiteXHR_origin.html due to teetering on the edge of timing out on B2G debug.

dom/security/test/cors/test_CrossSiteXHR_origin.html

@@ -17,6 +17,7 @@
 <script class="testbody" type="application/javascript;version=1.8">
 
 SimpleTest.waitForExplicitFinish();
+requestLongerTimeout(2);
 
 var origins =
   [{ server: 'http://example.org' },