Bug 1135045: add strings for the Hello infobar to be added soon. r=Standard8

browser/locales/en-US/chrome/browser/loop/loop.properties

@@ -315,3 +315,11 @@ rooms_room_full_call_to_action_label=Learn more about {{clientShortname}} »
 rooms_room_joined_label=Someone has joined the conversation!
 rooms_room_join_label=Join the conversation
 rooms_signout_alert=Open conversations will be closed
+
+# Infobar strings
+
+infobar_screenshare_browser_message=Users in your conversation will now be able to see the contents of any tab you click on.
+infobar_button_gotit_label=Got it!
+infobar_button_gotit_accesskey=G
+infobar_menuitem_dontshowagain_label=Don't show this again
+infobar_menuitem_dontshowagain_accesskey=D