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

chrome/browser/services/gcm/gcm_account_tracker_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 "chrome/browser/services/gcm/gcm_account_tracker.h"
 
 #include <map>
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
@@ skipping 50 matching lines @@
     EXPECT_EQ(expected_iter->email, actual_iter->email);
     EXPECT_EQ(expected_iter->access_token, actual_iter->access_token);
   }
 }
 
 // This version of FakeGCMDriver is customized around handling accounts and
 // connection events for testing GCMAccountTracker.
 class CustomFakeGCMDriver : public FakeGCMDriver {
  public:
   CustomFakeGCMDriver();
-  virtual ~CustomFakeGCMDriver();
+  ~CustomFakeGCMDriver() override;
 
   // GCMDriver overrides:
-  virtual void SetAccountTokens(
+  void SetAccountTokens(
       const std::vector<GCMClient::AccountTokenInfo>& account_tokens) override;
-  virtual void AddConnectionObserver(GCMConnectionObserver* observer) override;
-  virtual void RemoveConnectionObserver(
-      GCMConnectionObserver* observer) override;
-  virtual bool IsConnected() const override { return connected_; }
+  void AddConnectionObserver(GCMConnectionObserver* observer) override;
+  void RemoveConnectionObserver(GCMConnectionObserver* observer) override;
+  bool IsConnected() const override { return connected_; }
 
   // Test results and helpers.
   void SetConnected(bool connected);
   void ResetResults();
   bool update_accounts_called() const { return update_accounts_called_; }
   const std::vector<GCMClient::AccountTokenInfo>& accounts() const {
     return accounts_;
   }
   const GCMConnectionObserver* last_connection_observer() const {
     return last_connection_observer_;
@@ skipping 329 matching lines @@
   // clean it up before the SetAccessToken is called. This also means a new
   // token request will be issued
   EXPECT_FALSE(driver()->update_accounts_called());
   EXPECT_EQ(1UL, tracker()->get_pending_token_request_count());
 }
 
 // TODO(fgorski): Add test for adding account after removal >> make sure it does
 // not mark removal.
 
 }  // namespace gcm