Bug 1084689 - Update ReadingList banner icon, r=margaret, lucasr

mobile/android/base/Tab.java

@@ -478,6 +478,7 @@ public class Tab {
         JSONObject json = new JSONObject();
         try {
             json.put("tabID", String.valueOf(getId()));
+            json.put("url", getURL());
         } catch (JSONException e) {
             Log.e(LOGTAG, "JSON error - failing to add to reading list", e);
             return;

mobile/android/chrome/content/aboutReader.js

@@ -191,6 +191,7 @@ AboutReader.prototype = {
       }
 
       case "Reader:Add": {
+        // Page can be added by long-press pageAction, or by tap on banner icon.
         let args = JSON.parse(aData);
         if (args.url == this._article.url) {
           if (this._isReadingListItem != 1) {