Move BookmarksBridge into package with other bookmarks classes.

chrome/android/java/src/org/chromium/chrome/browser/bookmarks/BookmarkUndoController.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.content.Context;
 
 import org.chromium.chrome.R;
-import org.chromium.chrome.browser.bookmark.BookmarksBridge.BookmarkItem;
-import org.chromium.chrome.browser.bookmark.BookmarksBridge.BookmarkModelObserver;
+import org.chromium.chrome.browser.bookmarks.BookmarkBridge.BookmarkItem;
+import org.chromium.chrome.browser.bookmarks.BookmarkBridge.BookmarkModelObserver;
 import org.chromium.chrome.browser.bookmarks.BookmarkModel.BookmarkDeleteObserver;
 import org.chromium.chrome.browser.snackbar.Snackbar;
 import org.chromium.chrome.browser.snackbar.SnackbarManager;
 
 import java.util.Locale;
 
 /**
  * Shows an undo bar when the user modifies bookmarks,
  * allowing them to undo their changes.
  * TODO(danduong): Add move undo
@@ skipping 66 matching lines @@
                     .setAction(mContext.getString(R.string.undo), null));
         } else {
             mSnackbarManager.showSnackbar(
                     Snackbar.make(String.format(Locale.getDefault(), "%d", titles.length), this,
                             Snackbar.TYPE_ACTION)
                     .setTemplateText(mContext.getString(R.string.undo_bar_multiple_delete_message))
                     .setAction(mContext.getString(R.string.undo), null));
         }
     }
 }