Append late URLs at the end of the nearby URL list

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

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package org.chromium.chrome.browser.physicalweb;
 
 import android.content.Context;
 import android.graphics.Bitmap;
 import android.view.LayoutInflater;
 import android.view.View;
@@ skipping 63 matching lines @@
         PwsResult pwsResult = getItem(position);
         Bitmap iconBitmap = mIconUrlToIconMap.get(pwsResult.iconUrl);
 
         titleTextView.setText(pwsResult.title);
         urlTextView.setText(pwsResult.siteUrl);
         descriptionTextView.setText(pwsResult.description);
         iconImageView.setImageBitmap(iconBitmap);
 
         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;
+    }
 }