Componentize PrefSyncableService and support classes.

chrome/browser/signin/local_auth_unittest.cc

 // Copyright 2013 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/local_auth.h"
 
 #include "base/base64.h"
 #include "base/prefs/pref_service.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/test/base/testing_browser_process.h"
-#include "chrome/test/base/testing_pref_service_syncable.h"
 #include "chrome/test/base/testing_profile.h"
 #include "chrome/test/base/testing_profile_manager.h"
 #include "components/os_crypt/os_crypt.h"
+#include "components/syncable_prefs/testing_pref_service_syncable.h"
 #include "content/public/test/test_browser_thread_bundle.h"
 
 #include "testing/gtest/include/gtest/gtest.h"
 
 class LocalAuthTest : public testing::Test {
   content::TestBrowserThreadBundle thread_bundle_;
 };
 
 TEST_F(LocalAuthTest, SetAndCheckCredentials) {
   TestingProfileManager testing_profile_manager(
@@ skipping 85 matching lines @@
 TEST_F(LocalAuthTest, TruncateStringUnevenly) {
   std::string two_chars = "Az";
   std::string three_chars = "AzC";
   // 'z' = 0x7A, ':' = 0x3A.
   std::string two_chars_truncated = "A:";
   EXPECT_EQ(two_chars_truncated,
       LocalAuth::TruncateStringByBits(two_chars, 14));
   EXPECT_EQ(two_chars_truncated,
       LocalAuth::TruncateStringByBits(three_chars, 14));
 }