Standardize usage of virtual/override/final specifiers in google_apis/.

google_apis/gcm/engine/checkin_request_unittest.cc

 // 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.
 
 #include <string>
 
 #include "google_apis/gcm/engine/checkin_request.h"
 #include "google_apis/gcm/monitoring/fake_gcm_stats_recorder.h"
 #include "google_apis/gcm/protocol/checkin.pb.h"
 #include "net/base/backoff_entry.h"
@@ skipping 49 matching lines @@
  public:
   enum ResponseScenario {
     VALID_RESPONSE,  // Both android_id and security_token set in response.
     MISSING_ANDROID_ID,  // android_id is missing.
     MISSING_SECURITY_TOKEN,  // security_token is missing.
     ANDROID_ID_IS_ZER0,  // android_id is 0.
     SECURITY_TOKEN_IS_ZERO  // security_token is 0.
   };
 
   CheckinRequestTest();
-  virtual ~CheckinRequestTest();
+  ~CheckinRequestTest() override;
 
   void FetcherCallback(
       const checkin_proto::AndroidCheckinResponse& response);
 
   void CreateRequest(uint64 android_id, uint64 security_token);
 
   void SetResponseStatusAndString(
       net::HttpStatusCode status_code,
       const std::string& response_data);
 
@@ skipping 298 matching lines @@
 
   SetResponse(VALID_RESPONSE);
   CompleteFetch();
 
   EXPECT_TRUE(callback_called_);
   EXPECT_EQ(kAndroidId, android_id_);
   EXPECT_EQ(kSecurityToken, security_token_);
 }
 
 }  // namespace gcm