Standardize usage of virtual/override/final in chrome/renderer/

chrome/renderer/pepper/pepper_flash_renderer_host.h

Index: chrome/renderer/pepper/pepper_flash_renderer_host.h
diff --git a/chrome/renderer/pepper/pepper_flash_renderer_host.h b/chrome/renderer/pepper/pepper_flash_renderer_host.h
index 552418c482e6606f740ad4870f6f174dead4c215..891eab79de384986f6527b14c32d843ab797aa21 100644
--- a/chrome/renderer/pepper/pepper_flash_renderer_host.h
+++ b/chrome/renderer/pepper/pepper_flash_renderer_host.h
@@ -34,10 +34,10 @@ class PepperFlashRendererHost : public ppapi::host::ResourceHost {
   PepperFlashRendererHost(content::RendererPpapiHost* host,
                           PP_Instance instance,
                           PP_Resource resource);
-  virtual ~PepperFlashRendererHost();
+  ~PepperFlashRendererHost() override;
 
   // ppapi::host::ResourceHost override.
-  virtual int32_t OnResourceMessageReceived(
+  int32_t OnResourceMessageReceived(
       const IPC::Message& msg,
       ppapi::host::HostMessageContext* context) override;