Add BookmarkUndoService to Android build

chrome/browser/sync/glue/bookmark_change_processor.cc

 // Copyright 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.
 
 #include "chrome/browser/sync/glue/bookmark_change_processor.h"
 
 #include <map>
 #include <stack>
 #include <vector>
 
@@ skipping 512 matching lines @@
   // before the move.  Since deletions in the bookmark model propagate from
   // parent to child, we must move them to a temporary location.
   BookmarkModel* model = bookmark_model_;
 
   // We are going to make changes to the bookmarks model, but don't want to end
   // up in a feedback loop, so remove ourselves as an observer while applying
   // changes.
   model->RemoveObserver(this);
 
   // Changes made to the bookmark model due to sync should not be undoable.
-#if !defined(OS_ANDROID)
   ScopedSuspendBookmarkUndo suspend_undo(profile_);
-#endif
 
   // Notify UI intensive observers of BookmarkModel that we are about to make
   // potentially significant changes to it, so the updates may be batched. For
   // example, on Mac, the bookmarks bar displays animations when bookmark items
   // are added or deleted.
   model->BeginExtensiveChanges();
 
   // A parent to hold nodes temporarily orphaned by parent deletion.  It is
   // created only if it is needed.
   const BookmarkNode* foster_parent = NULL;
@@ skipping 343 matching lines @@
     updated_specifics.set_icon_url(bookmark_node->icon_url().spec());
     sync_node->SetBookmarkSpecifics(updated_specifics);
   }
 }
 
 bool BookmarkChangeProcessor::CanSyncNode(const BookmarkNode* node) {
   return bookmark_model_->client()->CanSyncNode(node);
 }
 
 }  // namespace browser_sync