Remove most occurences of PrefRegistrySyncable::UNSYNCABLE_PREF

chrome/browser/prefs/session_startup_pref_unittest.cc

Index: chrome/browser/prefs/session_startup_pref_unittest.cc
diff --git a/chrome/browser/prefs/session_startup_pref_unittest.cc b/chrome/browser/prefs/session_startup_pref_unittest.cc
index 87124359b277bb6e3e3f7142d30f3aa7b4d24212..ed082966a16ebd3b04920c291dc113c5f1cbf28e 100644
--- a/chrome/browser/prefs/session_startup_pref_unittest.cc
+++ b/chrome/browser/prefs/session_startup_pref_unittest.cc
@@ -19,16 +19,10 @@ class SessionStartupPrefTest : public testing::Test {
   void SetUp() override {
     pref_service_.reset(new TestingPrefServiceSyncable);
     SessionStartupPref::RegisterProfilePrefs(registry());
-    registry()->RegisterBooleanPref(
-        prefs::kHomePageIsNewTabPage,
-        true,
-        user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
+    registry()->RegisterBooleanPref(prefs::kHomePageIsNewTabPage, true);
     // Make the tests independent of the Mac startup pref migration (see
     // SessionStartupPref::MigrateMacDefaultPrefIfNecessary).
-    registry()->RegisterStringPref(
-        prefs::kProfileCreatedByVersion,
-        "22.0.0.0",
-        user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
+    registry()->RegisterStringPref(prefs::kProfileCreatedByVersion, "22.0.0.0");
   }
 
   bool IsUseLastOpenDefault() {
@@ -89,10 +83,7 @@ TEST_F(SessionStartupPrefTest, URLListManagedOverridesUser) {
 // (so that, in effect, the default value "Open the homepage" was selected),
 // their preferences are migrated on upgrade to m19.
 TEST_F(SessionStartupPrefTest, DefaultMigration) {
-  registry()->RegisterStringPref(
-      prefs::kHomePage,
-      "http://google.com/",
-      user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
+  registry()->RegisterStringPref(prefs::kHomePage, "http://google.com/");
   pref_service_->SetString(prefs::kHomePage, "http://chromium.org/");
   pref_service_->SetBoolean(prefs::kHomePageIsNewTabPage, false);
 
@@ -116,10 +107,7 @@ TEST_F(SessionStartupPrefTest, DefaultMigration) {
 // and the NTP is being used for the homepage, their preferences are migrated
 // to "Open the New Tab Page" on upgrade to M19.
 TEST_F(SessionStartupPrefTest, DefaultMigrationHomepageIsNTP) {
-  registry()->RegisterStringPref(
-      prefs::kHomePage,
-      "http://google.com/",
-      user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
+  registry()->RegisterStringPref(prefs::kHomePage, "http://google.com/");
   pref_service_->SetString(prefs::kHomePage, "http://chromium.org/");
   pref_service_->SetBoolean(prefs::kHomePageIsNewTabPage, true);
 
@@ -140,10 +128,7 @@ TEST_F(SessionStartupPrefTest, DefaultMigrationHomepageIsNTP) {
 // Checks to make sure that if the user had previously selected "Open the
 // "homepage", their preferences are migrated on upgrade to M19.
 TEST_F(SessionStartupPrefTest, HomePageMigration) {
-  registry()->RegisterStringPref(
-      prefs::kHomePage,
-      "http://google.com/",
-      user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
+  registry()->RegisterStringPref(prefs::kHomePage, "http://google.com/");
 
   // By design, it's impossible to set the 'restore on startup' pref to 0
   // ("open the homepage") using SessionStartupPref::SetStartupPref(), so set it
@@ -164,10 +149,7 @@ TEST_F(SessionStartupPrefTest, HomePageMigration) {
 // "homepage", and the NTP is being used for the homepage, their preferences
 // are migrated on upgrade to M19.
 TEST_F(SessionStartupPrefTest, HomePageMigrationHomepageIsNTP) {
-  registry()->RegisterStringPref(
-      prefs::kHomePage,
-      "http://google.com/",
-      user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
+  registry()->RegisterStringPref(prefs::kHomePage, "http://google.com/");
 
   // By design, it's impossible to set the 'restore on startup' pref to 0
   // ("open the homepage") using SessionStartupPref::SetStartupPref(), so set it