replace OVERRIDE and FINAL with override and final in remoting/

remoting/host/policy_hack/policy_watcher_mac.mm

Index: remoting/host/policy_hack/policy_watcher_mac.mm
diff --git a/remoting/host/policy_hack/policy_watcher_mac.mm b/remoting/host/policy_hack/policy_watcher_mac.mm
index 64e7ab03865e732261cd650a9af6bfd7fd8d04fd..c5c3a4dec3dc4d6624bab29e57e49ea09793eb64 100644
--- a/remoting/host/policy_hack/policy_watcher_mac.mm
+++ b/remoting/host/policy_hack/policy_watcher_mac.mm
@@ -32,14 +32,14 @@ class PolicyWatcherMac : public PolicyWatcher {
   }
 
  protected:
-  virtual void StartWatchingInternal() OVERRIDE {
+  virtual void StartWatchingInternal() override {
     Reload();
   }
 
-  virtual void StopWatchingInternal() OVERRIDE {
+  virtual void StopWatchingInternal() override {
   }
 
-  virtual void Reload() OVERRIDE {
+  virtual void Reload() override {
     DCHECK(OnPolicyWatcherThread());
     base::DictionaryValue policy;