virtual/override specifier cleanup in content/.

content/renderer/media/crypto/renderer_cdm_manager.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 CONTENT_RENDERER_MEDIA_CRYPTO_RENDERER_CDM_MANAGER_H_
 #define CONTENT_RENDERER_MEDIA_CRYPTO_RENDERER_CDM_MANAGER_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 10 matching lines @@
 
 namespace content {
 
 class ProxyMediaKeys;
 
 // Class for managing all the CDM objects in the same RenderFrame.
 class RendererCdmManager : public RenderFrameObserver {
  public:
   // Constructs a RendererCdmManager object for the |render_frame|.
   explicit RendererCdmManager(RenderFrame* render_frame);
-  virtual ~RendererCdmManager();
+  ~RendererCdmManager() override;
 
   // RenderFrameObserver overrides.
-  virtual bool OnMessageReceived(const IPC::Message& msg) override;
+  bool OnMessageReceived(const IPC::Message& msg) override;
 
   // Encrypted media related methods.
   void InitializeCdm(int cdm_id,
                      ProxyMediaKeys* media_keys,
                      const std::string& key_system,
                      const GURL& security_origin);
   void CreateSession(int cdm_id,
                      uint32 session_id,
                      CdmHostMsg_CreateSession_ContentType conent_type,
                      const std::vector<uint8>& init_data);
@@ skipping 34 matching lines @@
 
   // CDM ID to ProxyMediaKeys mapping.
   std::map<int, ProxyMediaKeys*> proxy_media_keys_map_;
 
   DISALLOW_COPY_AND_ASSIGN(RendererCdmManager);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_CRYPTO_RENDERER_CDM_MANAGER_H_