Standardize usage of virtual/override/final in chrome/browser/extensions/

chrome/browser/extensions/activity_log/fullstream_ui_policy.h

Index: chrome/browser/extensions/activity_log/fullstream_ui_policy.h
diff --git a/chrome/browser/extensions/activity_log/fullstream_ui_policy.h b/chrome/browser/extensions/activity_log/fullstream_ui_policy.h
index cdcc4465beddf48ac1eec0ac7abf9a91895c3633..8a583e49124632b7be147132be88fbf05b2876aa 100644
--- a/chrome/browser/extensions/activity_log/fullstream_ui_policy.h
+++ b/chrome/browser/extensions/activity_log/fullstream_ui_policy.h
@@ -26,31 +26,31 @@ class FullStreamUIPolicy : public ActivityLogDatabasePolicy {
   // For more info about these member functions, see the super class.
   explicit FullStreamUIPolicy(Profile* profile);
 
-  virtual void ProcessAction(scoped_refptr<Action> action) override;
+  void ProcessAction(scoped_refptr<Action> action) override;
 
-  virtual void ReadFilteredData(
+  void ReadFilteredData(
       const std::string& extension_id,
       const Action::ActionType type,
       const std::string& api_name,
       const std::string& page_url,
       const std::string& arg_url,
       const int days_ago,
-      const base::Callback
-          <void(scoped_ptr<Action::ActionVector>)>& callback) override;
+      const base::Callback<void(scoped_ptr<Action::ActionVector>)>& callback)
+      override;
 
-  virtual void Close() override;
+  void Close() override;
 
   // Remove the actions stored for this policy according to the passed IDs.
-  virtual void RemoveActions(const std::vector<int64>& action_ids) override;
+  void RemoveActions(const std::vector<int64>& action_ids) override;
 
   // Clean the URL data stored for this policy.
-  virtual void RemoveURLs(const std::vector<GURL>& restrict_urls) override;
+  void RemoveURLs(const std::vector<GURL>& restrict_urls) override;
 
   // Clean the data related to this extension for this policy.
-  virtual void RemoveExtensionData(const std::string& extension_id) override;
+  void RemoveExtensionData(const std::string& extension_id) override;
 
   // Delete everything in the database.
-  virtual void DeleteDatabase() override;
+  void DeleteDatabase() override;
 
   // Database table schema.
   static const char* kTableName;
@@ -61,14 +61,14 @@ class FullStreamUIPolicy : public ActivityLogDatabasePolicy {
  protected:
   // Only ever run by OnDatabaseClose() below; see the comments on the
   // ActivityDatabase class for an overall discussion of how cleanup works.
-  virtual ~FullStreamUIPolicy();
+  ~FullStreamUIPolicy() override;
 
   // The ActivityDatabase::Delegate interface.  These are always called from
   // the database thread.
-  virtual bool InitDatabase(sql::Connection* db) override;
-  virtual bool FlushDatabase(sql::Connection* db) override;
-  virtual void OnDatabaseFailure() override;
-  virtual void OnDatabaseClose() override;
+  bool InitDatabase(sql::Connection* db) override;
+  bool FlushDatabase(sql::Connection* db) override;
+  void OnDatabaseFailure() override;
+  void OnDatabaseClose() override;
 
   // Strips arguments if needed by policy.  May return the original object (if
   // unmodified), or a copy (if modifications were made).  The implementation