Bug 1300532 - Ensure old and new URL are ordered correctly to show prompt when entering ReaderView r=sebastian

MozReview-Commit-ID: 4Yql0m3JV6M

--HG--
extra : rebase_source : adde15b6f061c6ca64021416e7d6b09c35e2b301

mobile/android/base/java/org/mozilla/gecko/promotion/ReaderViewBookmarkPromotion.java

@@ -41,7 +41,7 @@ public class ReaderViewBookmarkPromotion extends BrowserAppDelegateWithReference
             case LOCATION_CHANGE:
                 // old url: data
                 // new url: tab.getURL()
-                final boolean enteringReaderMode = ReaderModeUtils.isEnteringReaderMode(tab.getURL(), data);
+                final boolean enteringReaderMode = ReaderModeUtils.isEnteringReaderMode(data, tab.getURL());
 
                 if (!hasEnteredReaderMode && enteringReaderMode) {
                     hasEnteredReaderMode = true;