replace OVERRIDE and FINAL with override and final in sync/

sync/syncable/deferred_on_disk_directory_backing_store_unittest.cc

Index: sync/syncable/deferred_on_disk_directory_backing_store_unittest.cc
diff --git a/sync/syncable/deferred_on_disk_directory_backing_store_unittest.cc b/sync/syncable/deferred_on_disk_directory_backing_store_unittest.cc
index b1053b8ff340a0f0b48dbbad27766a3122c019d9..b58ccb7624bd2c8cc8e198a1bc91257c33af408b 100644
--- a/sync/syncable/deferred_on_disk_directory_backing_store_unittest.cc
+++ b/sync/syncable/deferred_on_disk_directory_backing_store_unittest.cc
@@ -20,12 +20,12 @@ static const base::FilePath::CharType kSyncDataFolderName[] =
 
 class DeferredOnDiskDirectoryBackingStoreTest : public testing::Test {
  protected:
-  virtual void SetUp() OVERRIDE {
+  virtual void SetUp() override {
     CHECK(temp_dir_.CreateUniqueTempDir());
     db_path_ = temp_dir_.path().Append(kSyncDataFolderName);
   }
 
-  virtual void TearDown() OVERRIDE {
+  virtual void TearDown() override {
     STLDeleteValues(&handles_map_);
   }