Standardize usage of virtual/override/final specifiers.

components/invalidation/sync_system_resources_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 "components/invalidation/sync_system_resources.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 36 matching lines @@
   }
 };
 
 class SyncSystemResourcesTest : public testing::Test {
  protected:
   SyncSystemResourcesTest()
       : push_client_channel_(
             scoped_ptr<notifier::PushClient>(new notifier::FakePushClient())),
         sync_system_resources_(&push_client_channel_, &mock_state_writer_) {}
 
-  virtual ~SyncSystemResourcesTest() {}
+  ~SyncSystemResourcesTest() override {}
 
   void ScheduleShouldNotRun() {
     {
       // Owned by ScheduleImmediately.
       MockClosure mock_closure;
       base::Closure* should_not_run = mock_closure.CreateClosure();
       EXPECT_CALL(mock_closure, Run()).Times(0);
       sync_system_resources_.internal_scheduler()->Schedule(
           invalidation::Scheduler::NoDelay(), should_not_run);
     }
@@ skipping 137 matching lines @@
  protected:
   SyncNetworkChannelTest()
       : last_invalidator_state_(DEFAULT_INVALIDATION_ERROR),
         connected_(false) {
     network_channel_.AddObserver(this);
     network_channel_.AddNetworkStatusReceiver(
         invalidation::NewPermanentCallback(
             this, &SyncNetworkChannelTest::OnNetworkStatusChange));
   }
 
-  virtual ~SyncNetworkChannelTest() {
-    network_channel_.RemoveObserver(this);
-  }
+  ~SyncNetworkChannelTest() override { network_channel_.RemoveObserver(this); }
 
   void OnNetworkChannelStateChanged(
       InvalidatorState invalidator_state) override {
     last_invalidator_state_ = invalidator_state;
   }
 
   void OnNetworkStatusChange(bool connected) {
     connected_ = connected;
   }
 
@@ skipping 15 matching lines @@
 TEST_F(SyncNetworkChannelTest, NetworkStateChange) {
   EXPECT_FALSE(connected_);
   network_channel_.NotifyNetworkStatusChange(true);
   EXPECT_TRUE(connected_);
   network_channel_.NotifyNetworkStatusChange(false);
   EXPECT_FALSE(connected_);
 }
 
 }  // namespace
 }  // namespace syncer