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

chrome/renderer/chrome_content_renderer_client.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/renderer/chrome_content_renderer_client.h"
 
 #include "base/command_line.h"
 #include "base/debug/crash_logging.h"
 #include "base/logging.h"
 #include "base/metrics/field_trial.h"
@@ skipping 196 matching lines @@
 
   existing_names->swap(names);
   existing_values->swap(values);
 }
 
 #if defined(ENABLE_SPELLCHECK)
 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.
   DISALLOW_COPY_AND_ASSIGN(SpellCheckReplacer);
 };
 
 bool SpellCheckReplacer::Visit(content::RenderView* render_view) {
   SpellCheckProvider* provider = SpellCheckProvider::Get(render_view);
   DCHECK(provider);
   provider->set_spellcheck(spellcheck_);
@@ skipping 1343 matching lines @@
 content::BrowserPluginDelegate*
 ChromeContentRendererClient::CreateBrowserPluginDelegate(
     content::RenderFrame* render_frame,
     const std::string& mime_type) {
 #if defined(ENABLE_EXTENSIONS)
   return new extensions::GuestViewContainer(render_frame, mime_type);
 #else
   return NULL;
 #endif
 }