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

content/renderer/media/crypto/key_systems_unittest.cc

 // Copyright 2013 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 <string>
 #include <vector>
 
 #include "content/public/common/content_client.h"
 #include "content/public/common/eme_constants.h"
 #include "content/public/renderer/content_renderer_client.h"
@@ skipping 74 matching lines @@
 
   AddContainerMask("audio/foo", TEST_CODEC_FOO_AUDIO_ALL);
   AddContainerMask("video/foo", TEST_CODEC_FOO_ALL);
   AddCodecMask("fooaudio", TEST_CODEC_FOO_AUDIO);
   AddCodecMask("foovideo", TEST_CODEC_FOO_VIDEO);
 
   is_test_masks_added = true;
 }
 
 class TestContentRendererClient : public ContentRendererClient {
-  virtual void AddKeySystems(
-      std::vector<content::KeySystemInfo>* key_systems) override;
+  void AddKeySystems(std::vector<content::KeySystemInfo>* key_systems) override;
 };
 
 void TestContentRendererClient::AddKeySystems(
     std::vector<content::KeySystemInfo>* key_systems) {
   KeySystemInfo aes(kUsesAes);
   aes.supported_codecs = EME_CODEC_WEBM_ALL;
   aes.supported_codecs |= TEST_CODEC_FOO_ALL;
   aes.supported_init_data_types = EME_INIT_DATA_TYPE_WEBM;
   aes.use_aes_decryptor = true;
   key_systems->push_back(aes);
@@ skipping 534 matching lines @@
 
 #if defined(WIDEVINE_CDM_AVAILABLE)
   const char* const kTestWidevineUmaName = "Widevine";
 #else
   const char* const kTestWidevineUmaName = "Unknown";
 #endif
   EXPECT_EQ(kTestWidevineUmaName, KeySystemNameForUMA("com.widevine.alpha"));
 }
 
 }  // namespace content