Delete obviously unneeded forward declarations in chrome/browser/*.h.

chrome/browser/browser_init.h

 // Copyright (c) 2010 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_BROWSER_INIT_H_
 #define CHROME_BROWSER_BROWSER_INIT_H_
 #pragma once
 
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/file_path.h"
 #include "base/gtest_prod_util.h"
 #include "googleurl/src/gurl.h"
 
 class Browser;
 class CommandLine;
 class GURL;
-class PrefService;
 class Profile;
 class TabContents;
-#if defined(OS_CHROMEOS)
-namespace chromeos {
-class ServicesCustomizationDocument;
-}
-#endif
 
 // class containing helpers for BrowserMain to spin up a new instance and
 // initialize the profile.
 class BrowserInit {
  public:
   BrowserInit() {}
   ~BrowserInit() {}
 
   // Adds a url to be opened during first run. This overrides the standard
   // tabs shown at first run.
@@ skipping 159 matching lines @@
                                  Profile* profile, int* return_code,
                                  BrowserInit* browser_init);
 
   // Additional tabs to open during first run.
   std::vector<GURL> first_run_tabs_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserInit);
 };
 
 #endif  // CHROME_BROWSER_BROWSER_INIT_H_