Standardize usage of virtual/override/final in remoting/

remoting/host/policy_hack/policy_watcher_mac.mm

 // Copyright (c) 2012 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 "remoting/host/policy_hack/policy_watcher.h"
 
 #include <CoreFoundation/CoreFoundation.h>
 
 #include "base/compiler_specific.h"
 #include "base/mac/foundation_util.h"
@@ skipping 10 matching lines @@
 // practice on the Mac that the user must logout/login for policies to be
 // applied. This will actually pick up policies every
 // |kFallbackReloadDelayMinutes| which is sufficient for right now.
 class PolicyWatcherMac : public PolicyWatcher {
  public:
   explicit PolicyWatcherMac(
       scoped_refptr<base::SingleThreadTaskRunner> task_runner)
     : PolicyWatcher(task_runner) {
   }
 
-  virtual ~PolicyWatcherMac() {
-  }
+  ~PolicyWatcherMac() override {}
 
  protected:
-  virtual void StartWatchingInternal() override {
-    Reload();
-  }
+  void StartWatchingInternal() override { Reload(); }
 
-  virtual void StopWatchingInternal() override {
-  }
+  void StopWatchingInternal() override {}
 
-  virtual void Reload() override {
+  void Reload() override {
     DCHECK(OnPolicyWatcherThread());
     base::DictionaryValue policy;
 
     CFStringRef policy_bundle_id = CFSTR("com.google.Chrome");
     if (CFPreferencesAppSynchronize(policy_bundle_id)) {
       for (base::DictionaryValue::Iterator i(Defaults());
            !i.IsAtEnd(); i.Advance()) {
         const std::string& policy_name = i.key();
         base::ScopedCFTypeRef<CFStringRef> policy_key(
             base::SysUTF8ToCFStringRef(policy_name));
@@ skipping 33 matching lines @@
   }
 };
 
 PolicyWatcher* PolicyWatcher::Create(
         scoped_refptr<base::SingleThreadTaskRunner> task_runner) {
   return new PolicyWatcherMac(task_runner);
 }
 
 }  // namespace policy_hack
 }  // namespace remoting