Move remaining non-test, non-Chrome-specific Prefs code to base/prefs/.

chrome/browser/browser_encoding_browsertest.cc

 // 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.
 
 #include "base/bind.h"
 #include "base/file_util.h"
 #include "base/files/scoped_temp_dir.h"
+#include "base/prefs/pref_service.h"
 #include "chrome/browser/character_encoding.h"
 #include "chrome/browser/net/url_request_mock_util.h"
-#include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_commands.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/test/base/in_process_browser_test.h"
 #include "chrome/test/base/ui_test_utils.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/download_manager.h"
 #include "content/public/browser/navigation_controller.h"
@@ skipping 306 matching lines @@
 
     // Dump the page, the content of dump page should be equal with our expect
     // result file.
     base::FilePath expected_result_file_name =
         base::FilePath().AppendASCII(kAutoDetectDir).
         AppendASCII(kExpectedResultDir).
         AppendASCII(kTestDatas[i].expected_result);
     SaveAndCompare(kTestDatas[i].test_file_name, expected_result_file_name);
   }
 }