[Bookmarks] Remove side drawer and introduce root folder view

chrome/android/java/src/org/chromium/chrome/browser/bookmarks/BookmarkDelegate.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.bookmarks;
 
-import android.support.v4.widget.DrawerLayout;
-
 import org.chromium.chrome.browser.favicon.LargeIconBridge;
 import org.chromium.chrome.browser.widget.selection.SelectionDelegate;
 import org.chromium.components.bookmarks.BookmarkId;
 
 /**
  * Interface used by UI components in the main bookmarks UI to broadcast UI change notifications
  * and get bookmark data model.
  */
 interface BookmarkDelegate {
 
     /**
      * Delegate used to open urls for main fragment on tablet.
      */
     interface BookmarkStateChangeListener {
         /**
          * Let the tab containing bookmark manager load the url and later handle UI updates.
          * @param url The url to open in tab.
          */
         public void onBookmarkUIStateChange(String url);
     }
 
     /**
      * Returns whether the bookmarks UI will be shown in a dialog, instead of a NativePage. This is
      * typically true on phones and false on tablets, but not always, e.g. in multi-window mode or
      * after upgrading to the new bookmarks.
      */
     boolean isDialogUi();
 
     /**
-     * Corresponds to any folder named list item in the side drawer. Shows bookmarks under the
-     * folder.
+     * Shows bookmarks contained in the specified folder.
      * @param folder Parent folder that contains bookmarks to show as its children.
      */
     void openFolder(BookmarkId folder);
 
     /**
      * @return The SelectionDelegate responsible for tracking selected bookmarks.
      */
     SelectionDelegate<BookmarkId> getSelectionDelegate();
 
     /**
      * Notifies the current mode set event to the given observer. For example, if the current mode
      * is MODE_ALL_BOOKMARKS, it calls onAllBookmarksModeSet.
      */
     void notifyStateChange(BookmarkUIObserver observer);
 
     /**
-     * @return Whether there is a drawer.
-     */
-    boolean doesDrawerExist();
-
-    /**
-     * Close drawer if it's visible.
-     */
-    void closeDrawer();
-
-    /**
-     * @return The current drawer layout instance, if it exists.
-     */
-    DrawerLayout getDrawerLayout();
-
-    /**
      * Closes the Bookmark UI (if on phone) and opens the given bookmark.
      * @param bookmark       bookmark to open.
      * @param launchLocation The UI location where user tried to open bookmark. It is one of
      *                       {@link BookmarkLaunchLocation} values
      */
     void openBookmark(BookmarkId bookmark, int launchLocation);
 
     /**
      * Shows the search UI.
      */
@@ skipping 23 matching lines @@
      * @return Current UIState of bookmark main UI. If no mode is stored,
      *         {@link BookmarkUIState#STATE_LOADING} is returned.
      */
     int getCurrentState();
 
     /**
      * @return LargeIconBridge instance. By sharing the instance, we can also share the cache.
      */
     LargeIconBridge getLargeIconBridge();
 }