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

chrome/browser/chromeos/drive/drive_scheduler_unittest.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 "chrome/browser/chromeos/drive/drive_scheduler.h"
 
 #include "base/bind.h"
 #include "base/file_util.h"
 #include "base/json/json_reader.h"
+#include "base/prefs/pref_service.h"
 #include "base/threading/sequenced_worker_pool.h"
 #include "chrome/browser/chromeos/drive/drive_test_util.h"
 #include "chrome/browser/google_apis/drive_api_parser.h"
 #include "chrome/browser/google_apis/fake_drive_service.h"
 #include "chrome/browser/google_apis/gdata_wapi_parser.h"
-#include "chrome/browser/prefs/pref_service.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/test/base/testing_profile.h"
 #include "content/public/test/test_browser_thread.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using ::testing::AnyNumber;
 using ::testing::DoAll;
 using ::testing::Eq;
 using ::testing::Return;
@@ skipping 284 matching lines @@
           &google_apis::test_util::CopyResultsFromGetResourceEntryCallback,
           &error,
           &entry));
   google_apis::test_util::RunBlockingPoolTask();
 
   ASSERT_EQ(google_apis::HTTP_CREATED, error);
   ASSERT_TRUE(entry);
 }
 
 }  // namespace drive