Add history popup when long pressing on the back key.

content/public/android/java/src/org/chromium/content/browser/NavigationEntry.java

 // Copyright (c) 2012 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.content.browser;
 
 import android.graphics.Bitmap;
 
 /**
  * Represents one entry in the navigation history of a page.
  */
 public class NavigationEntry {
 
-    private String mUrl;
-    private String mOriginalUrl;
-    private String mVirtualUrl;
-    private String mTitle;
+    private final int mIndex;
+    private final String mUrl;
+    private final String mOriginalUrl;
+    private final String mVirtualUrl;
+    private final String mTitle;
     private Bitmap mFavicon;
 
     /**
      * Default constructor.
      */
-    /* package */ NavigationEntry(String url, String virtualUrl, String originalUrl, String title,
-            Bitmap favicon) {
+    /* package */ NavigationEntry(int index, String url, String virtualUrl, String originalUrl,
+            String title, Bitmap favicon) {
+        mIndex = index;
         mUrl = url;
         mVirtualUrl = virtualUrl;
         mOriginalUrl = originalUrl;
         mTitle = title;
         mFavicon = favicon;
     }
 
     /**
+     * @return The index into the navigation history that this entry represents.
+     */
+    public int getIndex() {
+        return mIndex;
+    }
+
+    /**
      * @return The actual URL of the page. For some about pages, this may be a
      *         scary data: URL or something like that. Use GetVirtualURL() for
      *         showing to the user.
      */
     public String getUrl() {
         return mUrl;
     }
 
     /**
      * @return The virtual URL, when nonempty, will override the actual URL of
@@ skipping 27 matching lines @@
         return mTitle;
     }
 
     /**
      * @return The favicon of the page. This may be null.
      */
     public Bitmap getFavicon() {
         return mFavicon;
     }
 
+    /**
+     * @param favicon The updated favicon to replace the existing one with.
+     */
+    public void updateFavicon(Bitmap favicon) {
+        mFavicon = favicon;
+    }
 }