Componentize PrefSyncableService and support classes.

chrome/browser/prefs/session_startup_pref_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/prefs/session_startup_pref.h"
 #include "chrome/common/pref_names.h"
-#include "chrome/test/base/testing_pref_service_syncable.h"
 #include "components/pref_registry/pref_registry_syncable.h"
+#include "components/syncable_prefs/testing_pref_service_syncable.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 // Unit tests for SessionStartupPref.
 class SessionStartupPrefTest : public testing::Test {
  public:
   void SetUp() override {
     pref_service_.reset(new TestingPrefServiceSyncable);
     SessionStartupPref::RegisterProfilePrefs(registry());
     registry()->RegisterBooleanPref(prefs::kHomePageIsNewTabPage, true);
@@ skipping 130 matching lines @@
   // using the pref service directly.
   pref_service_->SetInteger(prefs::kRestoreOnStartup, /*kPrefValueHomePage*/ 0);
   pref_service_->SetString(prefs::kHomePage, "http://chromium.org/");
   pref_service_->SetBoolean(prefs::kHomePageIsNewTabPage, true);
 
   SessionStartupPref pref = SessionStartupPref::GetStartupPref(
       pref_service_.get());
 
   EXPECT_EQ(SessionStartupPref::DEFAULT, pref.type);
 }