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

chrome/browser/safe_browsing/prefix_set.h

 // Copyright (c) 2011 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.
 //
 // A read-only set implementation for |SBPrefix| items.  Prefixes are
 // sorted and stored as 16-bit deltas from the previous prefix.  An
 // index structure provides quick random access, and also handles
 // cases where 16 bits cannot encode a delta.
 //
 // For example, the sequence {20, 25, 41, 65432, 150000, 160000} would
@@ skipping 30 matching lines @@
 //         4 byte magic number
 //         4 byte version number
 //         4 byte |index_.size()|
 //         4 byte |deltas_.size()|
 //     n * 8 byte |&index_[0]..&index_[n]|
 //     m * 2 byte |&deltas_[0]..&deltas_[m]|
 //        16 byte digest
 
 #ifndef CHROME_BROWSER_SAFE_BROWSING_PREFIX_SET_H_
 #define CHROME_BROWSER_SAFE_BROWSING_PREFIX_SET_H_
-#pragma once
 
 #include <vector>
 
 #include "chrome/browser/safe_browsing/safe_browsing_util.h"
 
 class FilePath;
 
 namespace safe_browsing {
 
 class PrefixSet {
@@ skipping 58 matching lines @@
   // changed after generation during construction.  |checksum_| is
   // calculated from the data used to construct those vectors.
   uint32 checksum_;
 
   DISALLOW_COPY_AND_ASSIGN(PrefixSet);
 };
 
 }  // namespace safe_browsing
 
 #endif  // CHROME_BROWSER_SAFE_BROWSING_PREFIX_SET_H_