Enable the ManagedBookmarks policy on all platforms.

chrome/browser/policy/profile_policy_connector_factory.cc

Index: chrome/browser/policy/profile_policy_connector_factory.cc
diff --git a/chrome/browser/policy/profile_policy_connector_factory.cc b/chrome/browser/policy/profile_policy_connector_factory.cc
index c7eb67a15ac6b1eaa43108ef9590777555a836fc..8089a3d2ce846440b30e9330d060b13db4be4957 100644
--- a/chrome/browser/policy/profile_policy_connector_factory.cc
+++ b/chrome/browser/policy/profile_policy_connector_factory.cc
@@ -8,9 +8,7 @@
 #include "base/memory/singleton.h"
 #include "chrome/browser/policy/profile_policy_connector.h"
 #include "chrome/browser/profiles/profile.h"
-#include "chrome/common/pref_names.h"
 #include "components/keyed_service/content/browser_context_dependency_manager.h"
-#include "components/pref_registry/pref_registry_syncable.h"
 
 #if defined(ENABLE_CONFIGURATION_POLICY)
 #include "chrome/browser/policy/schema_registry_service.h"
@@ -139,15 +137,6 @@ void ProfilePolicyConnectorFactory::BrowserContextDestroyed(
   BrowserContextKeyedBaseFactory::BrowserContextDestroyed(context);
 }
 
-void ProfilePolicyConnectorFactory::RegisterProfilePrefs(
-    user_prefs::PrefRegistrySyncable* registry) {
-#if defined(OS_ANDROID) || defined(OS_IOS)
-  registry->RegisterListPref(
-      prefs::kManagedBookmarks,
-      user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
-#endif
-}
-
 void ProfilePolicyConnectorFactory::SetEmptyTestingFactory(
     content::BrowserContext* context) {}