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

content/renderer/renderer_webapplicationcachehost_impl.h

Index: content/renderer/renderer_webapplicationcachehost_impl.h
diff --git a/content/renderer/renderer_webapplicationcachehost_impl.h b/content/renderer/renderer_webapplicationcachehost_impl.h
index 9e13a484f182a6a32ccd00652fb4304661d3fc95..c8efaaf9adce0fb374d902e2a572a2ca53b45c4c 100644
--- a/content/renderer/renderer_webapplicationcachehost_impl.h
+++ b/content/renderer/renderer_webapplicationcachehost_impl.h
@@ -18,10 +18,10 @@ class RendererWebApplicationCacheHostImpl : public WebApplicationCacheHostImpl {
       AppCacheBackend* backend);
 
   // WebApplicationCacheHostImpl:
-  virtual void OnLogMessage(AppCacheLogLevel log_level,
-                            const std::string& message) override;
-  virtual void OnContentBlocked(const GURL& manifest_url) override;
-  virtual void OnCacheSelected(const AppCacheInfo& info) override;
+  void OnLogMessage(AppCacheLogLevel log_level,
+                    const std::string& message) override;
+  void OnContentBlocked(const GURL& manifest_url) override;
+  void OnCacheSelected(const AppCacheInfo& info) override;
 
  private:
   RenderViewImpl* GetRenderView();