Bug 644424 - Reduce the remote tabs refresh delay and add a pref for it [r=mbrubeck]

mobile/app/mobile.js

@@ -131,6 +131,9 @@ pref("network.buffer.cache.size",  16384);
 /* history max results display */
 pref("browser.display.history.maxresults", 100);
 
+/* How many times should have passed before the remote tabs list is refreshed */
+pref("browser.display.remotetabs.timeout", 10);
+
 /* session history */
 pref("browser.sessionhistory.max_total_viewers", 1);
 pref("browser.sessionhistory.max_entries", 50);

mobile/chrome/content/bindings.xml

@@ -1384,7 +1384,7 @@
           // Don't bother refetching tabs if we already did so recently
           let lastFetch = Weave.Svc.Prefs.get("lastTabFetch", 0);
           let now = Math.floor(Date.now() / 1000);
-          if (now - lastFetch >= 30) {
+          if (now - lastFetch >= Services.prefs.getIntPref("browser.display.remotabs.timeout")) {
             // Force a sync only for the tabs engine
             engine.lastModified = null;
             engine.sync();