[Bookmarks] Refactor search view to use SelectableListLayout paradigm

chrome/android/java/src/org/chromium/chrome/browser/bookmarks/BookmarkUIState.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.net.Uri;
 import android.text.TextUtils;
 
 import org.chromium.chrome.browser.UrlConstants;
 import org.chromium.components.bookmarks.BookmarkId;
 
 /**
  * A class representing the UI state of the {@link BookmarkManager}. All
  * states can be uniquely identified by a URL.
  */
 class BookmarkUIState {
     static final int STATE_LOADING = 1;
     static final int STATE_FOLDER = 2;
+    static final int STATE_SEARCHING = 3;
     private static final int STATE_INVALID = 0;
 
     /**
      * One of the STATE_* constants.
      */
     int mState;
     String mUrl;
     BookmarkId mFolder;
 
     static BookmarkUIState createLoadingState() {
         BookmarkUIState state = new BookmarkUIState();
         state.mState = STATE_LOADING;
         state.mUrl = "";
         return state;
     }
 
+    static BookmarkUIState createSearchState() {
+        BookmarkUIState state = new BookmarkUIState();
+        state.mState = STATE_SEARCHING;
+        state.mUrl = "";
+        return state;
+    }
+
     static BookmarkUIState createFolderState(BookmarkId folder,
             BookmarkModel bookmarkModel) {
         return createStateFromUrl(createFolderUrl(folder), bookmarkModel);
     }
 
     /**
      * @see #createStateFromUrl(Uri, BookmarkModel)
      */
     static BookmarkUIState createStateFromUrl(String url, BookmarkModel bookmarkModel) {
         return createStateFromUrl(Uri.parse(url), bookmarkModel);
@@ skipping 54 matching lines @@
         if (mUrl == null || mState == STATE_INVALID) return false;
 
         if (mState == STATE_FOLDER) {
             return mFolder != null && bookmarkModel.doesBookmarkExist(mFolder)
                     && !mFolder.equals(bookmarkModel.getRootFolderId());
         }
 
         return true;
     }
 }