Refactor syncable DEVICE_INFO type from ChangeProcessor to SyncableService - part 3.

chrome/browser/extensions/api/signed_in_devices/signed_in_devices_manager.cc

Index: chrome/browser/extensions/api/signed_in_devices/signed_in_devices_manager.cc
diff --git a/chrome/browser/extensions/api/signed_in_devices/signed_in_devices_manager.cc b/chrome/browser/extensions/api/signed_in_devices/signed_in_devices_manager.cc
index 30c0ede9cfbb70b59e76a5c6baf3a5c1850d4fdb..3eadd84919482fd62264de31b07858b78ad5853e 100644
--- a/chrome/browser/extensions/api/signed_in_devices/signed_in_devices_manager.cc
+++ b/chrome/browser/extensions/api/signed_in_devices/signed_in_devices_manager.cc
@@ -44,17 +44,16 @@ SignedInDevicesChangeObserver::SignedInDevicesChangeObserver(
     Profile* profile) : extension_id_(extension_id),
                         profile_(profile) {
   ProfileSyncService* pss = ProfileSyncServiceFactory::GetForProfile(profile_);
-  if (pss) {
-    pss->AddObserverForDeviceInfoChange(this);
+  if (pss && pss->GetDeviceInfoTracker()) {
+    pss->GetDeviceInfoTracker()->AddObserver(this);
   }
 }
 
 SignedInDevicesChangeObserver::~SignedInDevicesChangeObserver() {
   ProfileSyncService* pss = ProfileSyncServiceFactory::GetForProfile(profile_);
-  if (pss) {
-    pss->RemoveObserverForDeviceInfoChange(this);
+  if (pss && pss->GetDeviceInfoTracker()) {
+    pss->GetDeviceInfoTracker()->RemoveObserver(this);
   }
-
 }
 
 void SignedInDevicesChangeObserver::OnDeviceInfoChange() {