Restructuring NavigationController functionalities from ContentViewCore to NavigationController

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

 // Copyright 2013 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 org.chromium.content_public.browser.NavigationHistory;
+
 /**
  * Provides functionality needed to query and page history and the ability to access
  * items in the history.
  */
 public interface NavigationClient {
 
     /**
      * Get a directed copy of the navigation history of the view.
      * @param isForward Whether the returned history should be entries after the current entry.
      * @param itemLimit The limit on the number of items included in the history.
      * @return A directed navigation for the page.
      */
     public NavigationHistory getDirectedNavigationHistory(boolean isForward, int itemLimit);
 
     /**
      * Navigates to the specified index in the navigation entry for this page.
      * @param index The navigation index to navigate to.
      */
     public void goToNavigationIndex(int index);
 }