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

chrome/browser/invalidation/gcm_invalidation_bridge_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 "base/run_loop.h"
 #include "chrome/browser/signin/fake_profile_oauth2_token_service.h"
 #include "chrome/browser/signin/fake_profile_oauth2_token_service_builder.h"
 #include "chrome/browser/signin/profile_oauth2_token_service_factory.h"
 #include "chrome/test/base/testing_profile.h"
 #include "components/gcm_driver/fake_gcm_driver.h"
 #include "components/gcm_driver/gcm_driver.h"
 #include "components/invalidation/gcm_invalidation_bridge.h"
 #include "content/public/test/test_browser_thread_bundle.h"
 #include "google_apis/gaia/fake_identity_provider.h"
 #include "google_apis/gaia/google_service_auth_error.h"
 #include "net/base/ip_endpoint.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace invalidation {
 namespace {
 
 // Implementation of GCMDriver::Register that always succeeds with the same
 // registrationId.
 class CustomFakeGCMDriver : public gcm::FakeGCMDriver {
  public:
   CustomFakeGCMDriver() {}
-  virtual ~CustomFakeGCMDriver() {}
+  ~CustomFakeGCMDriver() override {}
 
  protected:
   // FakeGCMDriver override:
-  virtual void RegisterImpl(
-      const std::string& app_id,
-      const std::vector<std::string>& sender_ids) override {
+  void RegisterImpl(const std::string& app_id,
+                    const std::vector<std::string>& sender_ids) override {
     base::MessageLoop::current()->PostTask(
         FROM_HERE,
         base::Bind(&CustomFakeGCMDriver::RegisterFinished,
                    base::Unretained(this),
                    app_id,
                    std::string("registration.id"),
                    gcm::GCMClient::SUCCESS));
   }
 
  private:
@@ skipping 112 matching lines @@
   bridge_->OnConnected(net::IPEndPoint());
   RunLoop();
   EXPECT_TRUE(connection_online_);
   bridge_->OnDisconnected();
   RunLoop();
   EXPECT_FALSE(connection_online_);
 }
 
 }  // namespace
 }  // namespace invalidation