Update {virtual,override,final} to follow C++11 style in chrome/browser/chromeos/drive.

chrome/browser/chromeos/drive/download_handler_unittest.cc

Index: chrome/browser/chromeos/drive/download_handler_unittest.cc
diff --git a/chrome/browser/chromeos/drive/download_handler_unittest.cc b/chrome/browser/chromeos/drive/download_handler_unittest.cc
index e081d8d488edec5c43b2754ce09a51ab54dd319d..d0143811e9684a7478cd6145508e4346e8888ebf 100644
--- a/chrome/browser/chromeos/drive/download_handler_unittest.cc
+++ b/chrome/browser/chromeos/drive/download_handler_unittest.cc
@@ -28,18 +28,16 @@ class DownloadHandlerTestFileSystem : public DummyFileSystem {
   void set_error(FileError error) { error_ = error; }
 
   // FileSystemInterface overrides.
-  virtual void GetResourceEntry(
-      const base::FilePath& file_path,
-      const GetResourceEntryCallback& callback) override {
+  void GetResourceEntry(const base::FilePath& file_path,
+                        const GetResourceEntryCallback& callback) override {
     callback.Run(error_, scoped_ptr<ResourceEntry>(
         error_ == FILE_ERROR_OK ? new ResourceEntry : NULL));
   }
 
-  virtual void CreateDirectory(
-      const base::FilePath& directory_path,
-      bool is_exclusive,
-      bool is_recursive,
-      const FileOperationCallback& callback) override {
+  void CreateDirectory(const base::FilePath& directory_path,
+                       bool is_exclusive,
+                       bool is_recursive,
+                       const FileOperationCallback& callback) override {
     callback.Run(error_);
   }
 
@@ -54,7 +52,7 @@ class DownloadHandlerTest : public testing::Test {
   DownloadHandlerTest()
       : download_manager_(new content::MockDownloadManager) {}
 
-  virtual void SetUp() override {
+  void SetUp() override {
     ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
 
     // Set expectations for download item.