Chromecast: virtual/override cleanup.

chromecast/common/cast_content_client.h

 // Copyright 2014 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.
 
 #ifndef CHROMECAST_COMMON_CAST_CONTENT_CLIENT_H_
 #define CHROMECAST_COMMON_CAST_CONTENT_CLIENT_H_
 
 #include "content/public/common/content_client.h"
 
 namespace chromecast {
 namespace shell {
 
 std::string GetUserAgent();
 
 class CastContentClient : public content::ContentClient {
  public:
-  virtual ~CastContentClient();
+  ~CastContentClient() override;
 
   // content::ContentClient implementation:
-  virtual std::string GetUserAgent() const override;
-  virtual base::string16 GetLocalizedString(int message_id) const override;
-  virtual base::StringPiece GetDataResource(
+  std::string GetUserAgent() const override;
+  base::string16 GetLocalizedString(int message_id) const override;
+  base::StringPiece GetDataResource(
       int resource_id,
       ui::ScaleFactor scale_factor) const override;
-  virtual base::RefCountedStaticMemory* GetDataResourceBytes(
+  base::RefCountedStaticMemory* GetDataResourceBytes(
       int resource_id) const override;
-  virtual gfx::Image& GetNativeImageNamed(int resource_id) const override;
+  gfx::Image& GetNativeImageNamed(int resource_id) const override;
 };
 
 }  // namespace shell
 }  // namespace chromecast
 
 #endif  // CHROMECAST_COMMON_CAST_CONTENT_CLIENT_H_