Backout ee3ee8a6e83b (bug 638369) for a possible Ts regression

mobile/chrome/content/browser.js

@@ -662,9 +662,6 @@ var Browser = {
     newTab.chromeTab.dispatchEvent(event);
     newTab.browser.messageManager.sendAsyncMessage("Browser:TabOpen");
 
-    // Display the URL in the titlebar while the page starts loading.
-    BrowserUI._titleChanged(newTab.browser);
-
     return newTab;
   },