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

content/browser/storage_partition_impl_map.h

 // 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.
 
 #ifndef CONTENT_BROWSER_STORAGE_PARTITION_MAP_H_
 #define CONTENT_BROWSER_STORAGE_PARTITION_MAP_H_
 
 #include <map>
 #include <string>
 
@@ skipping 12 matching lines @@
 namespace content {
 
 class BrowserContext;
 
 // A std::string to StoragePartition map for use with SupportsUserData APIs.
 class CONTENT_EXPORT StoragePartitionImplMap
   : public base::SupportsUserData::Data {
  public:
   explicit StoragePartitionImplMap(BrowserContext* browser_context);
 
-  virtual ~StoragePartitionImplMap();
+  ~StoragePartitionImplMap() override;
 
   // This map retains ownership of the returned StoragePartition objects.
   StoragePartitionImpl* Get(const std::string& partition_domain,
                             const std::string& partition_name,
                             bool in_memory);
 
   // Starts an asynchronous best-effort attempt to delete all on-disk storage
   // related to |site|, avoiding any directories that are known to be in use.
   //
   // |on_gc_required| is called if the AsyncObliterate() call was unable to
@@ skipping 81 matching lines @@
   PartitionMap partitions_;
 
   // Set to true when the ResourceContext for the associated |browser_context_|
   // is initialized. Can never return to false.
   bool resource_context_initialized_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_STORAGE_PARTITION_MAP_H_