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

content/browser/profiler_message_filter.h

Index: content/browser/profiler_message_filter.h
diff --git a/content/browser/profiler_message_filter.h b/content/browser/profiler_message_filter.h
index 2d068cfef531437768b2861e4e7b855ed23f476e..df4ce53e0617f3758c76ffad2bd42f0f05f4dd85 100644
--- a/content/browser/profiler_message_filter.h
+++ b/content/browser/profiler_message_filter.h
@@ -21,13 +21,13 @@ class ProfilerMessageFilter : public BrowserMessageFilter {
   explicit ProfilerMessageFilter(int process_type);
 
   // BrowserMessageFilter implementation.
-  virtual void OnChannelConnected(int32 peer_pid) override;
+  void OnChannelConnected(int32 peer_pid) override;
 
   // BrowserMessageFilter implementation.
-  virtual bool OnMessageReceived(const IPC::Message& message) override;
+  bool OnMessageReceived(const IPC::Message& message) override;
 
  protected:
-  virtual ~ProfilerMessageFilter();
+  ~ProfilerMessageFilter() override;
 
  private:
   // Message handlers.