bug 767133 spin-off

Is there an echo in the room? Backed out for orange. https://hg.mozilla.org/integration/mozilla-inbound/rev/11ae01d2d76a https://tbpl.mozilla.org/php/getParsedLog.php?id=12954816&tree=Mozilla-Inbound TEST-START | chrome://mochitests/content/browser/browser/components/downloads/test/browser/browser_basic_functionality.js TEST-UNEXPECTED-FAIL | chrome://mochitests/content/browser/browser/components/downloads/test/browser/browser_basic_functionality.js | There is the correct number of richlistitems - Got 0, expected 11 Stack trace: JS frame :: chrome://mochikit/content/browser-test.js :: test_is :: line 435 JS frame :: chrome://mochitests/content/browser/browser/components/downloads/test/browser/browser_basic_functionality.js :: gen_test :: line 40 JS frame :: chrome://mochitests/content/browser/browser/components/downloads/test/browser/head.js :: TR_continueTest :: line 103 JS frame :: chrome://mochitests/content/browser/browser/components/downloads/test/browser/head.js :: <TOP_LEVEL> :: line 216 JS frame :: chrome://browser/content/downloads/downloads.js :: DV_onDataLoadCompleted :: line 479 native frame :: <unknown filename> :: <TOP_LEVEL> :: line 0 JS frame :: resource:///modules/DownloadsCommon.jsm :: <TOP_LEVEL> :: line 525 JS frame :: resource:///modules/DownloadsCommon.jsm :: DD_handleCompletion :: line 525 native frame :: <unknown filename> :: <TOP_LEVEL> :: line 0 INFO TEST-END | chrome://mochitests/content/browser/browser/components/downloads/test/browser/browser_basic_functionality.js | finished in 1474ms