components: Move PrefRegistrySyncable into user_prefs namespace.

chrome/browser/bookmarks/bookmark_utils.cc

Index: chrome/browser/bookmarks/bookmark_utils.cc
diff --git a/chrome/browser/bookmarks/bookmark_utils.cc b/chrome/browser/bookmarks/bookmark_utils.cc
index 5caa1b291ab1f13c8212925a4801bec6263cfac0..e3624e749244d3d00bdd178a82fd20a4d4f9d76f 100644
--- a/chrome/browser/bookmarks/bookmark_utils.cc
+++ b/chrome/browser/bookmarks/bookmark_utils.cc
@@ -320,16 +320,19 @@ const BookmarkNode* ApplyEditsWithPossibleFolderChange(
   return node;
 }
 
-void RegisterUserPrefs(PrefRegistrySyncable* registry) {
-  registry->RegisterBooleanPref(prefs::kShowBookmarkBar,
-                                false,
-                                PrefRegistrySyncable::SYNCABLE_PREF);
-  registry->RegisterBooleanPref(prefs::kEditBookmarksEnabled,
-                                true,
-                                PrefRegistrySyncable::UNSYNCABLE_PREF);
-  registry->RegisterBooleanPref(prefs::kShowAppsShortcutInBookmarkBar,
-                                true,
-                                PrefRegistrySyncable::SYNCABLE_PREF);
+void RegisterUserPrefs(user_prefs::PrefRegistrySyncable* registry) {
+  registry->RegisterBooleanPref(
+      prefs::kShowBookmarkBar,
+      false,
+      user_prefs::PrefRegistrySyncable::SYNCABLE_PREF);
+  registry->RegisterBooleanPref(
+      prefs::kEditBookmarksEnabled,
+      true,
+      user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
+  registry->RegisterBooleanPref(
+      prefs::kShowAppsShortcutInBookmarkBar,
+      true,
+      user_prefs::PrefRegistrySyncable::SYNCABLE_PREF);
 }
 
 const BookmarkNode* GetParentForNewNodes(