Remove #pragma once from chrome/browser/{printing,safe_browsing,prefs,bookmarks,autocomplete}

chrome/browser/bookmarks/bookmark_expanded_state_tracker.h

 // Copyright (c) 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.
 
 #ifndef CHROME_BROWSER_BOOKMARKS_BOOKMARK_EXPANDED_STATE_TRACKER_H_
 #define CHROME_BROWSER_BOOKMARKS_BOOKMARK_EXPANDED_STATE_TRACKER_H_
-#pragma once
 
 #include <set>
 
 #include "chrome/browser/bookmarks/base_bookmark_model_observer.h"
 
 class BookmarkNode;
 class Profile;
 
 // BookmarkExpandedStateTracker is used to track a set of expanded nodes. The
 // nodes are persisted in preferences. If an expanded node is removed from the
@@ skipping 26 matching lines @@
 
   Profile* profile_;
 
   // Preferences path expanded state is stored under.
   const char* pref_path_;
 
   DISALLOW_COPY_AND_ASSIGN(BookmarkExpandedStateTracker);
 };
 
 #endif  // CHROME_BROWSER_BOOKMARKS_BOOKMARK_EXPANDED_STATE_TRACKER_H_