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

chrome/renderer/chrome_content_renderer_client.cc

Index: chrome/renderer/chrome_content_renderer_client.cc
diff --git a/chrome/renderer/chrome_content_renderer_client.cc b/chrome/renderer/chrome_content_renderer_client.cc
index baf68d88631f6f9776c7b81e7efb2ad8e5f6c51b..b0ff9203690c15a3ed17bb4863bfac4466cca8ea 100644
--- a/chrome/renderer/chrome_content_renderer_client.cc
+++ b/chrome/renderer/chrome_content_renderer_client.cc
@@ -214,7 +214,7 @@ class SpellCheckReplacer : public content::RenderViewVisitor {
  public:
   explicit SpellCheckReplacer(SpellCheck* spellcheck)
       : spellcheck_(spellcheck) {}
-  virtual bool Visit(content::RenderView* render_view) override;
+  bool Visit(content::RenderView* render_view) override;
 
  private:
   SpellCheck* spellcheck_;  // New shared spellcheck for all views. Weak Ptr.