Bug 1474704 - Enable the multiselect tabs feature by default on Nightly builds. r=jaws

MozReview-Commit-ID: CAWYr0RM96Z

--HG--
extra : rebase_source : 85682c1b2ab72bf1efc391f7d32d291326337a37

browser/app/profile/firefox.js

@@ -434,7 +434,11 @@ pref("browser.link.open_newwindow.disabled_in_fullscreen", false);
 #endif
 
 // Tabbed browser
+#if defined(NIGHTLY_BUILD)
+pref("browser.tabs.multiselect", true);
+#else
 pref("browser.tabs.multiselect", false);
+#endif
 pref("browser.tabs.20FpsThrobber", false);
 pref("browser.tabs.30FpsThrobber", false);
 pref("browser.tabs.closeTabByDblclick", false);