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

chrome/browser/printing/print_preview_unit_test_base.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_PRINTING_PRINT_PREVIEW_UNIT_TEST_BASE_H_
 #define CHROME_BROWSER_PRINTING_PRINT_PREVIEW_UNIT_TEST_BASE_H_
-#pragma once
 
 #include "base/memory/scoped_ptr.h"
 #include "chrome/test/base/browser_with_test_window_test.h"
 
 class TestingPrefService;
 
 class PrintPreviewUnitTestBase : public BrowserWithTestWindowTest {
  public:
   PrintPreviewUnitTestBase();
   virtual ~PrintPreviewUnitTestBase();
 
  protected:
   virtual void SetUp() OVERRIDE;
   virtual void TearDown() OVERRIDE;
 
  private:
   scoped_ptr<TestingPrefService> testing_local_state_;
 };
 
 #endif  // CHROME_BROWSER_PRINTING_PRINT_PREVIEW_UNIT_TEST_BASE_H_