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

content/browser/storage_partition_impl_map.cc

 // Copyright (c) 2012 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 "content/browser/storage_partition_impl_map.h"
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/files/file_enumerator.h"
 #include "base/files/file_path.h"
@@ skipping 40 matching lines @@
 // A derivative that knows about Streams too.
 class BlobProtocolHandler : public net::URLRequestJobFactory::ProtocolHandler {
  public:
   BlobProtocolHandler(ChromeBlobStorageContext* blob_storage_context,
                       StreamContext* stream_context,
                       storage::FileSystemContext* file_system_context)
       : blob_storage_context_(blob_storage_context),
         stream_context_(stream_context),
         file_system_context_(file_system_context) {}
 
-  virtual ~BlobProtocolHandler() {
-  }
+  ~BlobProtocolHandler() override {}
 
-  virtual net::URLRequestJob* MaybeCreateJob(
+  net::URLRequestJob* MaybeCreateJob(
       net::URLRequest* request,
       net::NetworkDelegate* network_delegate) const override {
     scoped_refptr<Stream> stream =
         stream_context_->registry()->GetStream(request->url());
     if (stream.get())
       return new StreamURLRequestJob(request, network_delegate, stream);
 
     if (!blob_protocol_handler_) {
       // Construction is deferred because 'this' is constructed on
       // the main thread but we want blob_protocol_handler_ constructed
@@ skipping 518 matching lines @@
 
     // We do not call InitializeURLRequestContext() for media contexts because,
     // other than the HTTP cache, the media contexts share the same backing
     // objects as their associated "normal" request context.  Thus, the previous
     // call serves to initialize the media request context for this storage
     // partition as well.
   }
 }
 
 }  // namespace content