Standardize usage of virtual/override/final in content/browser/

content/browser/fileapi/copy_or_move_file_validator_unittest.cc

Index: content/browser/fileapi/copy_or_move_file_validator_unittest.cc
diff --git a/content/browser/fileapi/copy_or_move_file_validator_unittest.cc b/content/browser/fileapi/copy_or_move_file_validator_unittest.cc
index f416462d042a0c92e9fbfbe91d8d80a4c950606b..ea2ba898940a0d75bdf565347174663cc5f10c80 100644
--- a/content/browser/fileapi/copy_or_move_file_validator_unittest.cc
+++ b/content/browser/fileapi/copy_or_move_file_validator_unittest.cc
@@ -197,9 +197,9 @@ class TestCopyOrMoveFileValidatorFactory
   // TODO(gbillock): switch args to enum or something
   explicit TestCopyOrMoveFileValidatorFactory(Validity validity)
       : validity_(validity) {}
-  virtual ~TestCopyOrMoveFileValidatorFactory() {}
+  ~TestCopyOrMoveFileValidatorFactory() override {}
 
-  virtual storage::CopyOrMoveFileValidator* CreateCopyOrMoveFileValidator(
+  storage::CopyOrMoveFileValidator* CreateCopyOrMoveFileValidator(
       const FileSystemURL& /*src_url*/,
       const base::FilePath& /*platform_path*/) override {
     return new TestCopyOrMoveFileValidator(validity_);
@@ -216,16 +216,16 @@ class TestCopyOrMoveFileValidatorFactory
                         base::File::FILE_OK :
                         base::File::FILE_ERROR_SECURITY) {
     }
-    virtual ~TestCopyOrMoveFileValidator() {}
+    ~TestCopyOrMoveFileValidator() override {}
 
-    virtual void StartPreWriteValidation(
+    void StartPreWriteValidation(
         const ResultCallback& result_callback) override {
       // Post the result since a real validator must do work asynchronously.
       base::MessageLoop::current()->PostTask(
           FROM_HERE, base::Bind(result_callback, result_));
     }
 
-    virtual void StartPostWriteValidation(
+    void StartPostWriteValidation(
         const base::FilePath& dest_platform_path,
         const ResultCallback& result_callback) override {
       // Post the result since a real validator must do work asynchronously.