Revert of Delete base/prefs and update callers to use components.

ios/chrome/browser/bookmarks/bookmarks_utils.cc

 // 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.
 
 #include "ios/chrome/browser/bookmarks/bookmarks_utils.h"
 
 #include "base/logging.h"
 #include "base/metrics/histogram_macros.h"
+#include "base/prefs/pref_service.h"
 #include "components/bookmarks/browser/bookmark_model.h"
-#include "components/prefs/pref_service.h"
 #include "ios/chrome/browser/bookmarks/bookmark_model_factory.h"
 #include "ios/chrome/browser/pref_names.h"
 #include "ios/public/provider/chrome/browser/browser_state/chrome_browser_state.h"
 
 using bookmarks::BookmarkModel;
 using bookmarks::BookmarkNode;
 
 void RecordBookmarkLaunch(BookmarkLaunchLocation launch_location) {
   DCHECK(launch_location < BOOKMARK_LAUNCH_LOCATION_COUNT);
   UMA_HISTOGRAM_ENUMERATION("Stars.LaunchLocation", launch_location,
@@ skipping 67 matching lines @@
 
   const std::vector<const BookmarkNode*> root_folders(RootLevelFolders(model));
   const BookmarkNode* top = node;
   while (top &&
          std::find(root_folders.begin(), root_folders.end(), top) ==
              root_folders.end()) {
     top = top->parent();
   }
   return top;
 }