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

chrome/browser/signin/signin_manager_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/signin/signin_manager.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/compiler_specific.h"
+#include "base/prefs/pref_service.h"
 #include "base/stringprintf.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/password_manager/encryptor.h"
 #include "chrome/browser/prefs/browser_prefs.h"
-#include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/signin/token_service.h"
 #include "chrome/browser/signin/token_service_unittest.h"
 #include "chrome/browser/webdata/web_data_service.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_pref_service.h"
 #include "chrome/test/base/testing_profile.h"
 #include "content/public/test/test_browser_thread.h"
 #include "google_apis/gaia/gaia_constants.h"
@@ skipping 613 matching lines @@
 
   manager_->ProvideOAuthChallengeResponse(
       GoogleServiceAuthError::CAPTCHA_REQUIRED, "token", "solution");
 
   SimulateProvideOAuthChallengeResponseValid();
   EXPECT_EQ("user@gmail.com", manager_->GetAuthenticatedUsername());
 
   EXPECT_EQ(1U, google_login_success_.size());
   EXPECT_EQ(1U, google_login_failure_.size());
 }