Append late URLs at the end of the nearby URL list

chrome/android/java/src/org/chromium/chrome/browser/physicalweb/NearbyUrlsAdapter.java

Index: chrome/android/java/src/org/chromium/chrome/browser/physicalweb/NearbyUrlsAdapter.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/physicalweb/NearbyUrlsAdapter.java b/chrome/android/java/src/org/chromium/chrome/browser/physicalweb/NearbyUrlsAdapter.java
index ab900b8dfb241c63ce4d79537ea3bee69ee52695..f01caabc40de642026eddb949f7dc4edab078296 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/physicalweb/NearbyUrlsAdapter.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/physicalweb/NearbyUrlsAdapter.java
@@ -81,4 +81,21 @@ class NearbyUrlsAdapter extends ArrayAdapter<PwsResult> {
 
         return view;
     }
+
+    /**
+     * Gets whether the specified site URL is in the list.
+     * @param siteUrl A string containing the site URL.
+     * @return Boolean true if the specified site URL is already in the list.
+     */
+    public boolean hasSiteUrl(String siteUrl) {
+        int itemCount = getCount();
+        for (int position = 0; position < itemCount; ++position) {
+            PwsResult pwsResult = getItem(position);
+            if (siteUrl.equals(pwsResult.siteUrl)) {
+                return true;
+            }
+        }
+
+        return false;
+    }
 }