[Sync] Fix namespaces for the browser_sync component.

chrome/browser/extensions/extension_service_sync_unittest.cc

Index: chrome/browser/extensions/extension_service_sync_unittest.cc
diff --git a/chrome/browser/extensions/extension_service_sync_unittest.cc b/chrome/browser/extensions/extension_service_sync_unittest.cc
index 5063fa6dd32e9cc76d7bf935e69c2237cbee72c2..48c5c59ad7703586bcea873ceb81a46a03d45740 100644
--- a/chrome/browser/extensions/extension_service_sync_unittest.cc
+++ b/chrome/browser/extensions/extension_service_sync_unittest.cc
@@ -303,7 +303,7 @@ TEST_F(ExtensionServiceSyncTest, DisableExtensionFromSync) {
   InitializeInstalledExtensionService(pref_path, source_install_dir);
 
   // The user has enabled sync.
-  ProfileSyncService* sync_service =
+  browser_sync::ProfileSyncService* sync_service =
       ProfileSyncServiceFactory::GetForProfile(profile());
   sync_service->SetFirstSetupComplete();
 
@@ -345,7 +345,7 @@ TEST_F(ExtensionServiceSyncTest, IgnoreSyncChangesWhenLocalStateIsMoreRecent) {
   InitializeInstalledExtensionService(pref_path, source_install_dir);
 
   // The user has enabled sync.
-  ProfileSyncService* sync_service =
+  browser_sync::ProfileSyncService* sync_service =
       ProfileSyncServiceFactory::GetForProfile(profile());
   sync_service->SetFirstSetupComplete();
   // Make sure ExtensionSyncService is created, so it'll be notified of changes.