Introduce //components/user_prefs, use to eliminate c/b/prefs dependency in Autofill.

chrome/browser/chromeos/accessibility/magnification_manager_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 "ash/magnifier/magnification_controller.h"
 #include "ash/shell.h"
 #include "base/command_line.h"
 #include "base/prefs/pref_service.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/chromeos/accessibility/accessibility_util.h"
 #include "chrome/browser/chromeos/accessibility/magnification_manager.h"
 #include "chrome/browser/chromeos/cros/cros_in_process_browser_test.h"
 #include "chrome/browser/chromeos/login/helper.h"
 #include "chrome/browser/chromeos/login/login_utils.h"
 #include "chrome/browser/chromeos/login/user_manager.h"
 #include "chrome/browser/chromeos/login/user_manager_impl.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/common/chrome_notification_types.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/test/base/testing_profile.h"
+#include "components/user_prefs/user_prefs.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace chromeos {
 
 namespace {
 
 void SetMagnifierEnabled(bool enabled) {
   MagnificationManager::Get()->SetMagnifierEnabled(enabled);
 }
 
@@ skipping 26 matching lines @@
   return MagnificationManager::Get()->IsMagnifierEnabled();
 }
 
 Profile* profile() {
   Profile* profile = ProfileManager::GetDefaultProfileOrOffTheRecord();
   DCHECK(profile);
   return profile;
 }
 
 PrefService* prefs() {
-  return PrefServiceFromBrowserContext(profile());
+  return components::UserPrefs::Get(profile());
 }
 
 void EnableScreenManagnifierToPref(bool enabled) {
   prefs()->SetBoolean(prefs::kScreenMagnifierEnabled, enabled);
 }
 
 void SetScreenManagnifierTypeToPref(ash::MagnifierType type) {
   prefs()->SetInteger(prefs::kScreenMagnifierType, type);
 }
 
@@ skipping 409 matching lines @@
 
   // Disables magnifier again and confirms observer is invoked.
   observed_ = false;
   SetMagnifierEnabled(false);
   EXPECT_TRUE(observed_);
   EXPECT_FALSE(observed_enabled_);
   EXPECT_FALSE(IsMagnifierEnabled());
 }
 
 }  // namespace chromeos