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

chrome/browser/background/background_contents_service_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 <string>
 
 #include "base/basictypes.h"
 #include "base/command_line.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/prefs/pref_service.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/background/background_contents_service.h"
 #include "chrome/browser/background/background_contents_service_factory.h"
-#include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/prefs/scoped_user_pref_update.h"
 #include "chrome/browser/tab_contents/background_contents.h"
 #include "chrome/browser/ui/browser_list.h"
 #include "chrome/common/chrome_notification_types.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/test/base/testing_browser_process.h"
 #include "chrome/test/base/testing_profile.h"
 #include "content/public/browser/notification_service.h"
 #include "googleurl/src/gurl.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 202 matching lines @@
   contents->Navigate(url);
   EXPECT_EQ(1U, GetPrefs(&profile)->size());
   contents2->Navigate(url2);
   EXPECT_EQ(2U, GetPrefs(&profile)->size());
   service.ShutdownAssociatedBackgroundContents(ASCIIToUTF16("appid"));
   EXPECT_FALSE(service.IsTracked(contents));
   EXPECT_EQ(NULL, service.GetAppBackgroundContents(ASCIIToUTF16("appid")));
   EXPECT_EQ(1U, GetPrefs(&profile)->size());
   EXPECT_EQ(url2.spec(), GetPrefURLForApp(&profile, contents2->appid()));
 }