Standardize usage of virtual/override/final specifiers in sync/.

sync/internal_api/attachments/attachment_uploader_impl_unittest.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "sync/internal_api/public/attachments/attachment_uploader_impl.h"
 
 #include "base/base64.h"
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/memory/ref_counted.h"
@@ skipping 176 matching lines @@
 //
 // This fixture provides an embedded HTTP server and a mock OAuth2 token service
 // for interacting with AttachmentUploaderImpl
 class AttachmentUploaderImplTest : public testing::Test,
                                    public base::NonThreadSafe {
  public:
   void OnRequestReceived(const HttpRequest& request);
 
  protected:
   AttachmentUploaderImplTest();
-  virtual void SetUp();
-  virtual void TearDown();
+  void SetUp() override;
+  void TearDown() override;
 
   // Run the message loop until UploadDone has been invoked |num_uploads| times.
   void RunAndWaitFor(int num_uploads);
 
   // Upload an attachment and have the server respond with |status_code|.
   //
   // Returns the attachment that was uploaded.
   Attachment UploadAndRespondWith(const net::HttpStatusCode& status_code);
 
   scoped_ptr<AttachmentUploader>& uploader();
@@ skipping 462 matching lines @@
   scoped_refptr<base::RefCountedString> hello_world(new base::RefCountedString);
   hello_world->data() = "hello world";
   EXPECT_EQ("yZRlqg==", AttachmentUploaderImpl::FormatCrc32cHash(
                             ComputeCrc32c(hello_world)));
 }
 
 // TODO(maniscalco): Add test case for when we are uploading an attachment that
 // already exists.  409 Conflict? (bug 379825)
 
 }  // namespace syncer