Browsing Serbian translation

note: 'Mobile: For Android devices. Do not use title case. Title of the new tab page, this is only shown while loading, then the title comes from the page.'
note: 'Mobile: For mobile devices. Do not use title case. Title of the new tab page, this is only shown while loading, then the title comes from the page.'
note: "The label of the 'New Tab' Tab context menu item."
note: 'The text in the keyboard overlay to explain the shortcut.'
note: 'The tooltip for the new tab button'
in: upstream/cr-28.0.1500.95/chrome/app/chromeos_strings.grdp, as IDS_KEYBOARD_OVERLAY_NEW_TAB
in: upstream/cr-28.0.1500.95/chrome/app/generated_resources.grd, as IDS_TOOLTIP_NEW_TAB