[Sync] Fix namespaces for the browser_sync component.

chrome/browser/extensions/external_pref_loader.cc

Index: chrome/browser/extensions/external_pref_loader.cc
diff --git a/chrome/browser/extensions/external_pref_loader.cc b/chrome/browser/extensions/external_pref_loader.cc
index 059a885687a8e671c9aa70fbae748353f3f94490..a79016e82133766d334b12c490180e6251dc2e1e 100644
--- a/chrome/browser/extensions/external_pref_loader.cc
+++ b/chrome/browser/extensions/external_pref_loader.cc
@@ -133,7 +133,7 @@ void ExternalPrefLoader::StartLoading() {
           PrefServiceSyncableFromProfile(profile_);
       DCHECK(prefs);
       syncable_pref_observer_.Add(prefs);
-      ProfileSyncService* service =
+      browser_sync::ProfileSyncService* service =
           ProfileSyncServiceFactory::GetForProfile(profile_);
       DCHECK(service);
       if (service->CanSyncStart() && (service->IsFirstSetupComplete() ||
@@ -155,7 +155,7 @@ void ExternalPrefLoader::OnIsSyncingChanged() {
 }
 
 void ExternalPrefLoader::OnStateChanged() {
-  ProfileSyncService* service =
+  browser_sync::ProfileSyncService* service =
       ProfileSyncServiceFactory::GetForProfile(profile_);
   DCHECK(service);
   if (!service->CanSyncStart()) {
@@ -184,7 +184,7 @@ void ExternalPrefLoader::PostLoadAndRemoveObservers() {
   DCHECK(prefs);
   syncable_pref_observer_.Remove(prefs);
 
-  ProfileSyncService* service =
+  browser_sync::ProfileSyncService* service =
       ProfileSyncServiceFactory::GetForProfile(profile_);
   DCHECK(service);
   service->RemoveObserver(this);