Standardize usage of virtual/override/final in net/

This patch was automatically generated by applying clang fixit hints
generated by the plugin to the source tree.

BUG=417463
TBR=rsleevi@chromium.org

Review URL: https://codereview.chromium.org/667923003

Cr-Commit-Position: refs/heads/master@{#300466}

1 files changed, 3 insertions, 7 deletions

diff --git a/net/base/network_change_notifier_mac.cc b/net/base/network_change_notifier_mac.cc
index e378418..14ec554 100644
--- a/net/base/network_change_notifier_mac.cc
+++ b/net/base/network_change_notifier_mac.cc
@@ -43,18 +43,14 @@ class NetworkChangeNotifierMac::DnsConfigServiceThread : public base::Thread {
  public:
   DnsConfigServiceThread() : base::Thread("DnsConfigService") {}
 
-  virtual ~DnsConfigServiceThread() {
-    Stop();
-  }
+  ~DnsConfigServiceThread() override { Stop(); }
 
-  virtual void Init() override {
+  void Init() override {
     service_ = DnsConfigService::CreateSystemService();
     service_->WatchConfig(base::Bind(&NetworkChangeNotifier::SetDnsConfig));
   }
 
-  virtual void CleanUp() override {
-    service_.reset();
-  }
+  void CleanUp() override { service_.reset(); }
 
  private:
   scoped_ptr<DnsConfigService> service_;