NEW_TAB_BUTTON   2187 chrome/browser/ui/gtk/tabs/tab_strip_gtk.cc       UMA_HISTOGRAM_ENUMERATION("Tab.NewTab", TabStripModel::NEW_TAB_BUTTON,
NEW_TAB_BUTTON   1532 chrome/browser/ui/views/tabs/tab_strip.cc     UMA_HISTOGRAM_ENUMERATION("Tab.NewTab", TabStripModel::NEW_TAB_BUTTON,